Mapping Mountains – Trimble Surveys – Garn Fawr

17.06.25  Carn Llidi (SM 737 280) 

Carn Llidi (SM 737 280)

Carn Llidi is rock strewn in its higher reaches and protected from any off-path ascent by copious amounts of tough undergrowth.  The hill is positioned north-west of Tyddewi (St David’s) which purports to be the smallest city in the British Isles.  It looks out over a jagged coastline which the Pembrokeshire Coast Path follows.  Although the hills hereabouts are good, it is the coastal path that is the highlight. 

Pentre Ifan

We were based at Caerfai for a few days, which is just to the south and easy walking distance from Tyddewi.  On our way to Caerfai we visited Pentre Ifan, which is one of Wales’ most impressive ancient burial sites with its upper monolith delicately balanced. 

Inside the chapel at St Non's

The coastal path was next to where we stayed; we walked to Solfach (Solva) and bussed it back to the city and on another day headed to the delights of St Non’s; a Catholic retreat beside the coast path. 

The cathedral at Tyddewi

Whilst at Tyddewi the first Welsh Bible was transferred to the cathedral.  It was translated by Bishop William Morgan and published in 1588.  It had never been on public display and along with the first Bible published in Irish was now at the cathedral.  Whilst visiting to see this Bible I stood and listened to four elderly ladies talking amongst themselves in Welsh, whilst pointing at the book housed in its display cabinet.  I found this scene rather emotional as this book played a crucial role in preserving the Welsh language and over 430 years later this small group of neatly dressed women were a testament to the importance of this book and the strength of the language. 

The first Welsh Bible

As well as hills, coastal walks and the cathedral, the land surrounding Twddewi also looks west to a series of islands dominated by Ynys Dewi (Ramsey), which I had visited and surveyed its three P30 hills in May 2016.  However, there are many more islands scattered beyond Ynys Dewi with the main grouping being Emsger, Carreg Rhoson and North Bishop.  And when at Caerfai we took two boat trips; the first around Ynys Dewi and the second a magical evening trip to North Bishop. 

On the coastal path

However stunningly beautiful the coastal path and islands are, and however interesting and historically significant the cathedral is, we also needed a hill to visit.  The one that looked the most impressive was Carn Llidi.  I contemplated bringing the Trimble to survey its summit, but the prospect of carrying the equipment for six days with only one hill to visit was not appealing and therefore the Trimble remained at home and LIDAR would have to suffice for the numerical details of this hill. 

The highest of the chain of islands known as North Bishop

We parked on a grass verge on the B4583 road at it descends to its end at Whitesands beach.  This gave opportunity for a circular walk with only the uphill section back on the narrow paved road at the end of the walk as a repeat. 

Beside the narrow road leading down to Whitesands

Setting off the weather was again lovely; with crisp blue sky heralding what we hoped would be another glorious day.  However, weather hereabouts was proving fickle.  Each evening I watched from the elevation of Caerfai as thin cloud banks quickly rolled landward and then quickly dissipated as the sun cast out again, only for another cloud bank to follow.

Our route took us down to the beach, where we were confronted by a multitude of school children, all donned out in wet suits with their paddle boards aimed at the sea.  It was good to walk on the beach, somewhere we would revisit for an afternoon during a particularly warm spell of weather later in the week.  Our walk this time on its sands was only short as we headed north and soon joined the coastal path. 

Suzanne on the coastal path leading north from Whitesands

This section was like others we had visited with dramatic plummeting views downward to rocky coves, sandy beaches and towering sea stacks, and all experienced with the sea a constant blue and today the sky casting radiant.  It was indeed a good day to be out, but that weather hereabouts is a fickle beast. 

The view back toward Whitesands

We were looking for a path on our right leaving the main coastal path and which, hopefully, would take us toward our hill.  Thankfully we found it as the prospect of walking through the tough undergrowth away from any path is not recommended.

The path swung up gaining ground and always heading toward the western end of the Carn Llidi summit ridge.  As with many similar hills leaving the path can course calamitous results of floundering in copious amounts of evil undergrowth.  Therefore, I thought it prudent to ask one or two fellow walkers who were heading down in the opposite direction, whether and where the path continued.  We were met with conflicting advice, some encouraged going back down to another path and others seemed to discourage anything to do with venturing high on the hill.  I found this advice rather unusual, thanked them and off we went forever upward. 

Murky conditions starting to set in over Ynys Dewi

The path eventually swung up on to a concreted section leading to the summit of Carn Llidi Bychan; an outlier of the main peak and the farthest extension of the rocky western end of the summit ridge.  As height was gained we looked out toward Ynys Dewi, which was now being overtaken by one of those fickle weather conditions with grey murk approaching.

Ancient burial chamber beside the path on the way to Carn Llidi

The initial continuation toward the main peak was easy enough, with a variety of narrow paths leading toward the upthrust of the summit cone.  As we reached where path butted against rock, Suzanne decided that was far enough for her and found a sheltered spot away from the increasing strength of the wind, to wait until I visited the summit and hopefully descended safely back to where she was now happily sitting and admiring the view northward. 

Approaching the summit cone of Carn Llidi

When approaching Carn Llidi from the west its highest point requires hands on rock to reach its summit.  I used to hunt out any scramble and have many fond memories of weekends spent in Nant Peris, evenings in the Vaynol Arms, breakfasts in Pete’s Eats and late mornings and afternoons venturing on to Eryri peaks via scrambling on rocky ridges.  This at that point of my life was the norm.  I found it highly enjoyable and considered myself competent enough to know when to back off from something that looked beyond my limit.  However, age and scrambling not being the norm can quickly lead to lack of confidence on rock, and this was only confounded when in October 2023 I slipped and fell from a rocky ridge close to Moel Hebog.  Falling on the opposite side of the ridge would probably have resulted in death.  I was fortunate to walk away with just a large bruise on my upper thigh and a few scratches.  This experience dampened any confidence I had left when confronted with hands on rock and those scrambles that in my younger days were the norm.  Today was the first time I had encountered rock since the day I had fallen.  This all sounds rather melodramatic, but it is as it is and it feels good to write about such things and be as honest as I can.

Before venturing up the rock I took my rucksack off and left it at the base of the summit cone and safely zipped my camera in its case.  The way up was obvious as the rock was discoloured through many peoples visits over the years, it involved two sections of scrambling before reaching the high point, the first up a diagonal wide groove and the second a metre or two traverse to the left and then up a few steps to where the summit opened up.  By the time I reached the top it was definitely windy, not so much to be dangerous but enough that I was thankful I had decided not to bring the Trimble.

The view north-eastward up the coast from the summit of Carn Llidi

Reversing my upward route was relatively easy, as with most things of a similar nature, taking ones time is essential.  Soon I was back at my rucksack and shortly afterward sitting beside Suzanne tucking in to some yummy morsel of food.  As we gathered our stuff to head down we felt the first drop of rain that was being pushed landward beyond the grey sky murk that we had seen over Ynys Dewi on the latter part of our ascent.

Our route down was easy, reversing the summit ridge to Carn Llidi Bychan and the narrow concrete path leading down to the main path, here we continued down toward the road, instead of swinging rightward and rejoining the coastal path.  This soon brought us out on to the road and that nasty little bit of uphill at the end of the walk, never the best at the end of any walk. 

Relaxing in the car with our picnic with the cloud base now enveloping Carn Llidi

During our descent the weather continued to close in, with those succulent blue skies of earlier now replaced by greying murk with intermittent spells of light coastal drizzle being brought in on the wind.  The rain was never heavy enough for me to put waterproofs on and we arrived back at the car still dry from our endeavours.  All that remained was a quick change whilst the kettle was boiling and to have a feast of a picnic sitting in comfort looking out of the car window as the whole upper ridge of Carn Llidi disappeared under grey murk. 

 

Survey Result: 

 

Carn Llidi 

Summit Height:  182.1m (LIDAR)  

Summit Grid Reference:  SM 73797 28001 (LIDAR)

Bwlch Height:  57.8m (LIDAR)

Bwlch Grid Reference:  SM 76096 28625 & SM 76132 28642 (LIDAR) 

Drop:  124.3m (LIDAR)

Dominance:  68.27% (LIDAR)

 

 

For further details please consult the Trimble Survey Spreadsheet 

Mapping Mountains – Trimble Surveys – Yr Eifl

 

17.09.22  Mynydd Mawr (SH 140 258) 

Mynydd Mawr (SH 140 258) from a previous visit to the hill

As a child my family holidayed at Morfa Nefyn and Edern.  I have a distant memory that during one of these holidays we headed to the end of Pen Llŷn and drove up the concrete road that leads to the summit of Mynydd Mawr.  We could have done this more than once, but my memory only retains small segments from my childhood and even these only give me the semblance of one distant childhood visit. 

For many years we spent our holidays in this house in Morfa Nefyn

It would be many years later when I next visited this hill and since then I have been back to survey its summit and visited again with my brother.  This time I was with my aunt, cousin and brother.  We were staying in Nantlle and a road trip taking in the beauty of the Llŷn had been suggested. 

The view from the coast at Nefyn

It is all too easy to accept the land one lives in; after all it is the land one is used to.  However, heading from Welshpool to Nantlle my aunt and cousin both marvelled at the beauty of the land we were travelling through.  I had done this journey countless times over many years and although I would like to think my eye is still appreciative of this land, there is no doubt an acceptance on my part, as for me it is a constant.  Seeing it with new eyes through the experience of my aunt and cousin gave me added appreciation of just how beautiful this land is and by that fact, how fortunate I am to live where I do.

On our way down Pen Llŷn we visited the old houses where we holidayed, reminiscing on times now long gone.  A multitude of narrowing lanes lead west down the Llŷn toward the paved road that starts its way up Mynydd Mawr, this soon turns in to a concrete road ending at the top of the hill, where a levelled section gives adequate parking for a number of cars.  We weren’t the only ones heading up this hill, there were a few walkers on the manicured green paths, but in the main it was the convenience of a car that brought people here. 

Looking inland toward the high Eryri peaks

Having parked I sauntered off to stand on the high point and before joining Bryn, Shirley and Julie I took a few minutes to look inland toward the higher peaks of Eryri which were framed by a sweeping coastline.  It was a stunning view, whilst behind the great swathe of the Irish Sea dominated, following this around and the bulk of Ynys Enlli looked back as a darkened silhouette, whilst to its right a slight greyed outline of the distant Wicklow hills, south of Dublin could just be picked out.

Leaving the summit I joined Bryn, Shirl and Julie on the series of steps leading down with the distant Ynys Enlli ahead.  We followed these for a while before stopping, all round was the expanse of sea, a huge blue mass stretching to the horizon. 

Looking out toward Ynys Enlli

We stayed looking out to sea for quite some time and once heading back up the steps we veered rightward to join one of the paths leading up the hill toward the top, this soon led us back to the car.  It’s always good to visit this summit, be it by foot or car.  It signifies an end of land and if the weather conditions are favourable, as they were today, it can give a dramatic element to this beautiful land that we live in. 

 

Survey Result:

 

Mynydd Mawr

Summit Height:  160.0m (converted to OSGM15, from previous Trimble GeoXH 6000 survey)

Summit Grid Reference:  SH 14021 25869 (from previous Trimble GeoXH 6000 survey)

Bwlch Height:  64m (spot height)

Bwlch Grid Reference:  SH 14952 26292 (spot height)

Drop:  96m (Trimble GeoXH 6000 summit and spot height bwlch)

Dominance:  60.00% (Trimble GeoXH 6000 summit and spot height bwlch)

 

 

For details on the survey of Mynydd Mawr

For details on the 2^nd visit to Mynydd Mawr

 

For further details please consult the Trimble Survey Spreadsheet

 

 

 

Mapping Mountains – Trimble Surveys – Cilfaesty

 

31.05.22  Trehafren Hill (SO 100 910, previously Trimbled) 

LIDAR image of Trehafren Hill (SO 100 910)

It was turning dusk when Charles and I left the cinema in Newtown, we had boosted Charles’ P30 total with a quick visit to Beddau (SO 185 977) before the film and now Charles wanted another quick tick and Trehafren Hill was perfect to do this.

This hill is positioned close to the centre of Newtown and having last visited in July of 2021, I knew a way up.  However, Charles had come well prepared and with mobile phone in hand directed us toward the hill and proceeded to point us in the direction of a parking area which according to whatever he was looking at on his phone screen indicated the best way up the hill.  His phone was correct!

I parked and soon joined Charles who had walked through a gap between houses and was close to where a narrow gravelled path started up the hill.  We followed this as it snaked its way up, only leaving it to head up grassed paths which conveniently cut corners. 

On the summit of Trehafren Hill

It felt good to be visiting a hill at this time of day.  I am much more a morning person when hill walking and enjoy that cooling air of early morning when height can be gained before the heat of the day builds.  For such a hill as this that has little ascent, that need to set off early is not necessary, but the routine is now set firmly in place and has been for many years.

Considering that the weather had not been at all welcoming for the majority of the day with prolonged heavy rain, the evening was proving delightful.  It was not dramatic on top with illuminated cloudscapes, but there was a distinct sense of height having been gained as the flickering lights of Newtown began to cast their spell below.

We stayed on top for a few minutes before heading down following our inward route back to the awaiting car and then drove home to Welshpool for a well-earned mug of tea. 

 

Survey Result: 

 

Trehafren Hill (significant name change)

Summit Height:  152.8m (converted to OSGM15, from previous Trimble GeoXH 6000 survey)

Summit Grid Reference:  SO 10020 91073 (from previous Trimble GeoXH 6000 survey)  

Bwlch Height:  115.4m (LIDAR)

Bwlch Grid Reference:  SO 10146 90923 (LIDAR)

Drop:  37.4m (Trimble GeoXH 6000 summit and LIDAR bwlch)

Dominance:  24.50% (Trimble GeoXH 6000 summit and LIDAR bwlch)

 

 

For details on the survey of this hill

For further details please consult the Trimble Survey Spreadsheet

 

 

Mapping Mountains – Trimble Surveys – Carnedd Wen

31.05.22  Beddau (SO 185 977, not Trimbled) 

LIDAR image of Beddau (SO 185 977)

My two previous visits to this hill were in utter contrast to one another.  The first in June 2011 involved 15 miles of walking from the front door of my bungalow and back.  The second in September 2020 was with Alex Cameron and involved driving up the concrete access road to where car parking is situated adjacent to the wooden chalets in the wood at the summit.  On this second visit it took a matter of a minute or two to saunter to the high point.

On this occasion I was with Charles Everett and as we had an appointment at the cinema in Newtown we could not linger, and as Charles wanted to boost his P30 totals a hill or two were in order and this one fitted Charles’ needs perfectly. 

Charles at the summit of Beddau

I had come underdressed for hill bagging wearing a pair of Birkenstocks with shirt and jacket.  However, my North Face trousers could pass as hill walking attire, but still, Birkenstocks are not necessarily the best for bagging hills, but then again this summit could be visited barefoot from where a car can be parked.

Having remembered the entrance in to the complex from my last visit with Alex, we were soon heading up the concrete access road toward the top of the hill.  I parked at the last available space before the high point, which this time was even closer to when I visited with Alex. 

An appropriate pose when wearing Birkenstocks.  Photo: Charles Everett

From here it was no more than literal seconds to the summit.  I conquered the top before Charles, who was safely bringing up the rear.  I stood on top and adopted an appropriate pose with fists clenched wondering if this could be deemed an ethical bag.  Obviously it could, otherwise we would not have done it!

Charles soon joined me on the small area of the summit and we each took the obligatory photographs.  However, with a film to see we could not linger and a few minutes after arriving we were back in the car and soon in Newtown heading for the cinema. 

 

Survey Result: 

 

Beddau  

Summit Height:  126.0m (LIDAR) (significant height revision)

Summit Grid Reference:  SO 18549 97771 (LIDAR)

Bwlch Height:  87.9m (LIDAR)

Bwlch Grid Reference:  SO 18841 98344 (LIDAR)

Drop:  38.1m (LIDAR)

Dominance:  30.24% (LIDAR)

 

 

For details on the 1^st visit to this hill

For further details please consult the Trimble Survey Spreadsheet

  

Mapping Mountains – Trimble Surveys – Moel y Gamelin

 

20.09.21  Windy Hill (SN 307 548) 

LIDAR image of Windy Hill (SJ 307 548)

The summit of this hill seemed relatively easy to reach, as examining the local roads with the aid of a Google Car showed a convenient parking place just to the north of the summit next to a gravel track and paved drive, with the latter leading to a house.  Above the paved drive was a field and the summit was either in the corner of it or across a boundary wall in a wood that forms a part of a disused quarry. 

I decided against a direct route up the field via the paved drive as it looked as if the land formed a part of the house’s garden.  Instead I opted for the gravel track.  This led past a number of houses with no direct access to the east which would take me up toward the summit.  However, even with direct access the continuing route from this direction did not look welcoming with an overgrown wood and no sign of a path, so I continued until reaching the end of the gravel track at a house named Rock Cottage. 

Once next to the cottage the gravel track swung leftward and upward, I followed it.  I now entered an overgrown small field above and also beside, the cottage.  I hoped this would give access to the field beyond a large unsavoury and overgrown hedge that barred me from where I wanted to go.  It didn’t, so I backtracked and found an alternative path that took me around and up the southerly flank of the hill.  However, although this path was good it was taking me away from the summit so I clambered over a collapsed gate and tried my utmost to avoid a patch of nettles.  Usually collapsed gates are relatively easy to get over, this had other obstacles involved and landing on the other side gave me hope that I would get to the summit in one piece.  I was now in the field leading toward the top of the hill, the view to my north-east opened up looking out across the flatlands leading in to England. 

The path leading toward the collapsed gate

Prior to visiting this hill I had LIDARed its summit and noted the ten figure grid reference to be a few metres from that given on the Hill Bagging website.  I hoped the LIDAR co-ordinates to be correct as it looked as if this was in a field beside the boundary next to the wood and disused quarry, whilst the summit position given on the Hill Bagging website gives the high point a few metres over a fence amongst trees. 

The field leading toward the summit

When I reached the top of the field I activated the Trimble and used it as a hand-help device and zeroed in to the co-ordinates I had noted from the Hill Bagging website, it pointed toward a fence made of cut and fashioned branches.  This was higher than a normal fence and for my no longer young and lithe frame proved another cumbersome obstacle to overcome.  Eventually I made it in to the wood on the opposite side and stood on the mound that Hill Bagging gives as the summit.  This position certainly looked the high point, but the LIDAR position was farther north toward a wall and boundary corner, I headed that way to have a look, but soon came back satisfied that the mound was higher. 

The fence leading in to the wood with the summit just beyond

I examined the ground and found a small embedded rock which I judged to be the high point and therefore I soon had the Trimble set up on top of my rucksack, and with the measurement offset noted between its internal antenna and the ground at its base I set it to ebb down to its 0.1m accuracy level before data should be logged.  This took about 20 minutes to achieve, but I was happy enough in the wood, not doing much, just standing, relaxing and recovering from cumbersome fence crossings.  Once the 0.1m accuracy level was attained I pressed ‘Log’ and stood back and below the equipment so as not to disturb satellite reception. 

Gathering data at the summit of Windy Hill

During data collection nothing else stirred, I ate a boiled egg and waited whilst looking down in to the bottom of the discussed quarry.  Prior to the quarry I suspect the natural summit of this hill was higher than where the Trimble was now placed, with LIDAR contouring suggesting the summit had been quarried away. 

The onward route from the summit and down the field

After five minutes of data were gathered and stored I closed the equipment down and headed to the boundary wall and the path on its opposing side.  This followed the wall down, but I suspected it ended in someone’s back garden or just petered out, so I followed another path adjacent to the fence that formed the boundary with the field where I had been earlier, this thankfully led on to the open field above my car.  I wandered down it and was soon overlooking the house at the end of the paved drive.  Just as I headed toward steps leading down to the paved section a man appeared and I waved and apologised for suddenly appearing in his back garden, he smiled and we chatted for about ten minutes or so.  He told me about the sections of undergrowth he had cut to make the path I had just been on.  He proved very pleasant to meet and when I asked him about the name of the hill, he replied that it is known as Windy Hill. 

 

Survey Result: 

 

Windy Hill

Summit Height:  174.0m (converted to OSGM15, Trimble GeoXH 6000)

Summit Grid Reference:  SJ 30743 54849 (Trimble GeoXH 6000)

Bwlch Height:  131m (spot height)

Bwlch Grid Reference:  SJ 30729 53674 (spot height)

Drop:  43m (Trimble GeoXH 6000 summit and spot height bwlch)

Dominance:  24.73% (Trimble GeoXH 6000 summit and spot height bwlch)

 

 

For further details please consult the Trimble Survey Spreadsheet

Mapping Mountains – Trimble Surveys – Moel y Gamelin

 

20.09.21  Bryn y Gaer (SJ 313 574) 

Bryn y Gaer (SJ 313 574)

With the weather set fine and a pocketful of ten figure grid references I decided to head north again, to a similar area to where I visited four days ago.  Then I surveyed three hills close to Rhydtalog, today I hoped to visit and survey four hills close to Yr Hôb (Hope), Sydallt and Brymbo.  Two of these summits were immersed in woodland, therefore I did not know whether Trimble data could be gathered, but the other two were on open land, and waiting in woods for the Trimble to do its stuff is something that I am now accustomed to, and with the whole day to visit four relatively small heighted hills, I was in no rush whatsoever. 

The first of my four hills planned for the day is situated between the B5373 and the A550 roads and is positioned above the village of Yr Hôb (Hope).  The summit area is wooded and the hill was originally listed under the name of Caer Estyn, which as its name implies is that of an ancient hill fort positioned on the slopes of this hill.  However, the listed name of this hill was changed to Bryn y Gaer when updating the Dominant list. 

Prior to visiting this hill I had read online logs that the wood enclosing the summit mainly consists of birch trees, these are wonderful in autumn as they give a succulent bronzed colour.  I had contemplated leaving this walk for another four – five weeks when that autumnal colour is reaching its peak, but decided to take the opportunity today. 

The sun was shining down from a beautiful early morning sky as I drove toward the hill.  I approached Bryn y Gaer from the south having parked close to the public footpath leading up Rock Lane.  Having walked up the lane past a number of houses I entered the wood and followed a footpath on the left.  This gained height and weaved its way above the remains of a large old quarry.  Sunlight glimmered through the overhead canopy; the path was dry and the hill quiet, it was a wonderful place to find myself at this time in the morning. 

Woodland walks have a beauty all to themselves; they have tranquillity different to that of many hills.  Their pathways lead, and their trees march upward, their enclosed nature is at contrast to that of an open hill and perhaps it is this contrast that is part of their appeal. 

The path leading to the summit of Bryn y Gaer

I continued following the path, one or two alternate routes bisected from it, but the path I had chosen was leading ever upward and so it did until taking me to within a few metres of the summit. 

Prior to visiting this hill I had analysed its summit and bwlch via LIDAR, building up contours and noting each height and ten figure grid reference.  Once at the summit area I switched the Trimble on and compared its co-ordinates with those produced from LIDAR. 

LIDAR image of Bryn y Gaer (SJ 313 574)

Following the LIDAR co-ordinates the Trimble took me in to a morass of bracken and bramble close to the path I had walked on.  I circled a route in the undergrowth testing how solid the ground was and how high in comparison to ground where the path was positioned. 

I thought ground in the morass of bracken and bramble to be the high point, but I was not going to try and set the Trimble up in such diabolical terrain and therefore slowly made my way out of the undergrowth back to the path.  I assessed the path from a number of directions and chose a spot for Trimble placement.  If data were gathered this would at least give me a comparison between its position and that ascertained from LIDAR analysis, although due to the enclosed nature of the set-up position I had little hope that any Trimble data would be accurate. 

It was a long process waiting for the 0.1m accuracy level to be attained before data should be logged.  I waited for about 15 minutes and eventually decided to press ‘Log’ and walked back down another path and stood behind a tree whilst data were gathered and stored. 

Gathering data at the summit area of Bryn y Gaer

It proved a lovely place to stand and just listen to the wood, a quiet experience with just a hint of breeze blown movement.  Some sunlight pieced the overhead canopy, but otherwise I stood in shade and enjoyed every minute of my wait. 

Once data were gathered and stored, I closed the equipment down, packed it away, took a few photographs and retraced my inward route back to my awaiting car.  Here I met a dog walker; we chatted and commented on how lovely the morning was, I asked him about the name of the hill, as I had with a woman taking her daughter out when I first arrived, both told me the hill is named Bryn y Gaer. 

 

Survey Result: 

 

Bryn y Gaer (significant name change)

Summit Height:  153.9m (LIDAR)

Summit Grid Reference:  SJ 31381 57459 (LIDAR)

Bwlch Height:  95.8m (LIDAR)

Bwlch Grid Reference:  SJ 31774 58223 (LIDAR)

Drop:  58.1m (LIDAR)

Dominance:  37.74% (LIDAR)

 

 

For further details please consult the Trimble Survey Spreadsheet