Details for Benchmark: OX0818

N 43° 50.934 W 110° 34.032 (NAD 83)

Altitude: 7733

Coordinates may not be exact. Altitude is VERTCON and location is ADJUSTED. (more info)

Location:
In TETON county, WY View Original Datasheet
Designation:
SIGNAL
Marker Type:
triangulation station disk
Setting:
set into the top of a round concrete monument
Stability:

Reference Points

Must Read!

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Navigation

Found it 09/24/2021 JillianA2007 found OX0818   Visit Log

Thanks for the beautiful views!
Found it 08/31/2021 KB_1 found OX0818   Visit Log

Located while enjoying the view
Found it 08/05/2021 JoeBum found OX0818   Visit Log

I think this is only the second benchmark I've logged, but I figured why not! It was interesting reading about how triangulation markers are used.
Found it 06/10/2021 drew8 found OX0818   Visit Log

Came across Reference Mark No 1 while up top enjoying the view

[Photos:]
photoSignal Mountain Reference Mark No 1
Found it 08/20/2020 TTO2 found OX0818   Visit Log

Catching up on some benchmark logging.

[Photos:]
photo
Found it 09/24/2019 Shrek & Fiona found OX0818   Visit Log

made the find and enjoyed the view
Found it 09/09/2019 icaunais found OX0818   Visit Log

Saw this while enjoying the view!

[Photos:]
photo
Found it 07/16/2019 FlensNL found OX0818   Visit Log

Visited this summit with RenskeBreda. By coincidence some guy was explaining this marker to one of his kids. Of course we had to 'find' it ourselves then.

According to my GPS the marker is at N 43° 50.932 W 110° 34.034

FlensNL

[Photos:]
photoFlensNL @ OX0818
Found it 07/16/2019 RenskeBreda found OX0818   Visit Log

My second Benchmark.
We found this one by chance. Another person pointed at it.

[Photos:]
photoRenskeBreda and FlensNL @OX0818
Found it 06/06/2019 knocher found OX0818   Visit Log

Discovered this benchmark while visiting the platform on Signal Mountain - what a funny name ;-)
Found it 09/08/2018 mmgro found OX0818   Visit Log

Found this benchmark at the summit of Signal Mountain. When we photographed the benchmark, other people found it very interesting and started asking questions what is was and made pictures themselves. Very funny. Thanks for showing this benchmark!
Found it 08/10/2018 marktag found OX0818   Visit Log

Found this benchmark while touring Grand Teton National Park. The views from the top of Signal Mountain are incredible. On one side there is great expansive view of the valley and the Snake River. The other side affords views of the Grand Tetons. Don’t pass this spot by!

[Photos:]
photoSignal Mtn benchmark
Found it 07/31/2018 chochotrain found OX0818   Visit Log

Found while driving through the park!

[Photos:]
photoSignal mountain
Found it 06/15/2018 DreadPirateWestley found OX0818   Visit Log

I found this benchmark while touring Grand Teton National Park.

DreadPirateWestley

[Photos:]
photoBenchmark
Found it 09/02/2017 CarlottaP found OX0818   Visit Log

Oaknest and I spotted this benchmark while up on Signal Mountain.

[Photos:]
photoBenchmark with my keys
Found it 09/02/2017 oaknest found OX0818   Visit Log

Found it with CarlottaP.
Found it 08/14/2017 SaJo&Matthi found OX0818   Visit Log

Today we visited the smaller and hidden places in Teton NP and "stumpled" here across the marker.

[Photos:]
photomarker in Teton NP
Found it 07/17/2017 Fink007 found OX0818   Visit Log

As others have noted, we (myself, sjfink, RyanXY, and HayBeth) found a Reference Marker. It was pointing toward an area that is closed by NPS, although a lot of people sadly ignore the signs.

[Photos:]
photoFink007, sjfink, RyanXY, and HayBeth
RM 1
Found it 09/29/2016 mdurf found OX0818   Visit Log

Found at top of Signal Mountain - what beautiful views, with the bonus of a benchmark nearby.

[Photos:]
photoTetons view
photoMarker
photoValley View
Found it 06/21/2016 goldygopher75 found OX0818   Visit Log

Found while taking in the beautiful scene at the top of Signal Mountain. A nice bonus added in. TFTBM!
Found it 06/04/2016 Ereff found OX0818   Visit Log

seen on Signal Mountain
Found it 09/11/2015 KyTravelers found OX0818   Visit Log

This mark was a bonus to the beautiful sunrise we encountered. Mark easy to see.

[Photos:]
photoSignal Mt No 1
Found it 08/05/2015 cneumann98 found OX0818   Visit Log

Found the reference mark while exploring the park.

[Photos:]
photoSignal Mountain RM 1
Found it 06/09/2015 EKDintheburg found OX0818   Visit Log

Found RM 1 while visiting the park
Found it 05/15/2015 wv-peakbagger found OX0818   Visit Log

Only found RM1. Did not find benchmark. No fire lookout tower or cabin either.

[Photos:]
photo2015-05-15 Signal Mountain RM
Found it 05/14/2015 HRPlett found OX0818   Visit Log

We found this after we drove up a beautiful road up Signal Mountain. What a fantastic view! Had a little lunch at the picnic table nearby and just enjoyed the peaceful serenity.

[Photos:]
photoOX0818 Signal Mt.
photoOX0818 - What a view!
photoOX0818 - Lunch!! Thanks for the drive up!
Found it 09/22/2014 Denali41 found OX0818   Visit Log

I will log my find of the Reference Mark, No. 1, 1931 just as many others have done, as a "find" of this BM--knowing the difference. When we return home from this wonderful trip I'll post a photo or two.
Found it 09/09/2014 birder428 found OX0818   Visit Log

Found on way to Jackson from Yellowstone.
Found it 09/02/2014 iguazu found OX0818   Visit Log

Found this Benchmark on our way from Yellowstone to SLC. Iguazu from Germany.

[Photos:]
photo2014-09-02 13.04.44
Found it 08/12/2014 Bardenl found OX0818   Visit Log

Found SIGNAL MT reference mark NO 1 dated 1931 while camping in Yellowstone in summer 2013. Had the photo on my desktop all this time but never logged the find.

[Photos:]
photoPhoto date July 22, 2013
Found it 07/08/2014 BP Tx Trackr found OX0818   Visit Log

Reference Mark, No 1, 1931. Found at the lookout area of Signal Mt. with my wife, my brother & his wife.

[Photos:]
photo100_5707
photo100_5706
Found it 06/04/2014 Elliotts4 found OX0818   Visit Log

Like the others, found only the reference mark disk No. 1. Beautiful views from up here!

[Photos:]
photoDisk No. 1
Found it 05/30/2014 kwsimmons found OX0818   Visit Log

Found this while enjoying the view from Signal Mtn.
Found it 09/15/2013 Sammydogs found OX0818   Visit Log

Found when we got to the top of Signal Mountain, great ride to the top, superview.

[Photos:]
photoclose up view of benchmark
photoIt is here
Found it 07/21/2013 OrangeRunner found OX0818   Visit Log

Found this while exploring the Signal Mt. area while on vacation.

[Photos:]
photoIMG_1345
Found it 06/04/2013 Cachen Bob found OX0818   Visit Log

Found while enjoying the views.

[Photos:]
photoSIGNAL MT - Reference Mark
Found it 09/18/2012 bmathason found OX0818   Visit Log

Found the same reference mark.

[Photos:]
photoReference marker No 1
Found it 09/10/2012 LabRat101 found OX0818   Visit Log

Just about tripped over it while visiting Signal Mt.
Found it 09/09/2012 lmt000 found OX0818   Visit Log

Like everybody else I found the reference mark

[Photos:]
photomark
photoeye level
photofor reference
Found it 08/06/2012 sec-guy found OX0818   Visit Log
N 43° 50.933 W 110° 34.034

Recovered Reference Mark No. 1.
Mark is somewhat battered, but readable.
Photos of mark and location attached.

[Photos:]
photoOX0818 Ref. No1 Mark
photoOX0818 Ref. No1 Mark Location
Found it 07/27/2012 jasperdakota found OX0818   Visit Log

Found it!
Found it 06/29/2012 The Flying Dutchmen found OX0818   Visit Log

Found STAMPED SIGNAL MT. NO. 1 1931, on top of Signal Mountain.

[Photos:]
photoSTAMPED SIGNAL MT. NO. 1 1931
photoOne foot on the benchmark.
Found it 06/25/2012 eagle8247 found OX0818   Visit Log

Found while visiting friends and sightseeing.
Found it 06/12/2012 MBQS found OX0818   Visit Log

My daughter worked the summer in the Tetons and while visiting, she made a point of getting us up to Signal Mt for the great view. While there, we spotted the benchmark and grabbed a picture.

[Photos:]
photoSignal Mt1 benchmark
Found it 08/16/2011 hershill found OX0818   Visit Log

As with most, happened upon it by accident!

[Photos:]
photoDSC_7160
Found it 08/01/2011 refujee found OX0818   Visit Log

<3 Grand Teton
Found it 07/27/2011 BackroadsAdventures found OX0818   Visit Log

Found by accident on our honeymoon! We thought logging was a good way to remember Signal Mountain and that spectacular view!

Found it 06/20/2011 Nolron found OX0818   Visit Log

Discovered this one by accident while on a family trip.

[Photos:]
photoCIMG0594
photoCIMG0591
Found it 06/09/2011 TheWhittenBoys found OX0818   Visit Log

Found this on top of the mountain as we were being covered in snow, very cool spot
Found it 06/04/2011 R&R4 found OX0818   Visit Log

Found this one completely on accident. Went up for the view, saw the dented disc (placed in 1981 per disc) and had to run back down to the car to get the GPS and log the coordinates! Beautiful view.
Found it 10/17/2010 adraval found OX0818   Visit Log

Found while on the top of Signal Mountain!

Found it 08/27/2010 JohnnyKay found OX0818   Visit Log

Took the drive up Signal Mtn. on our last day out here and found this. Unfortunately, no sign of the benchmark up here.
Found it 08/22/2010 avawser found OX0818   Visit Log

Found this while taking in the view of the Snake River below.
Found it 07/10/2010 Pale Raven found OX0818   Visit Log

Found it while taking in the view!
Found it 07/08/2010 rootee2t found OX0818   Visit Log

Found it while traveling across country with the fam. Beautiful views on this gorgeous day!

[Photos:]
photoBenchmark on Signal Mtn, Grand Tetons
photoView looking west-southwest
Found it 06/26/2010 Treker06 found OX0818   Visit Log

It appears someone has taken a ballpeen hammer to this disk

Found it 06/20/2010 sunspot&sparky found OX0818   Visit Log

Found with Txhappycamper traveling this summer.

Found it 06/20/2010 TXhappycamper found OX0818   Visit Log

Found while on a ............Road trip! Three teachers, two dogs and a cat on a summer adventure. From Houston, TX to St. Joseph, Missouri to Dubois, Grand Tetons, Jackson Hole and Yellowstone, WY to Carnation, WA and the GeoWoodstock Event 2010, celebrating 10 years of geocaching, to the coast of Washington and Olympic National Park to the Sand Dunes, Crater Lake and Diamond Lake in Oregon. Now into UTAH for some sightseeing great day at the Golden Spike NHS and cachin'..Soon heading east and home. TFTC! We have been visiting friends, seeing the sights and geocaching with Sunspot & Sparky. Great FUN!

Found it 06/13/2010 Jaybirder found OX0818   Visit Log

While hiking the Grand Tetons found this Benchmark Disk. Reference Mark, Signal MT, 1931, No 1. PID: CP5781. Does not show up by its own PID but seems everyone logs it here. Did not locate actual mark, only the ref mark No. 1.

[Photos:]
photoSignal MT 1931 No 1, Ref Mark
Found it 06/11/2010 TeamBlueHeeler found OX0818   Visit Log

Traveling thur the park . Easy find .

[Photos:]
photoIMG00733-20100611-1821
Found it 06/09/2010 teamCull found OX0818   Visit Log

After a long drive, Mrs. teamC. found this one. What a fantastic vista!

This entry was edited by teamCull on Wednesday, 07 July 2010 at 05:37:16.
Found it 06/06/2010 gmcsac found OX0818   Visit Log
N 43° 50.934 W 110° 34.032

Found it in the rain, couldn't see 50 feet off the mountain. S&G of "The Back Door Gang" El Dorado, Arkansas (gmcsac)

[Photos:]
photoOX0818
Found it 10/22/2009 xdelta found OX0818   Visit Log

Stumbled upon this benchmark while enjoying the view from the top of Signal Mountain in Grand Teton National Park.

[Photos:]
photoBenchmark PID OX0818
Found it 09/24/2009 curious found OX0818   Visit Log

Easy find at the top
Found it 09/22/2009 RYDyer found OX0818   Visit Log

I figured there had to be a benchmark up here. Sure enough walked right over it. N 43 50.940 W 110 34.026 at 7,718'

[Photos:]
photoSignal Mountain Benchmark
Found it 09/16/2009 KangarooKid found OX0818   Visit Log

Beautiful views from this spot. With all of the other scenic spots, we regret not getting back here for a sunrise. Not sure if there would be enough parking spots.
Found it 09/02/2009 Kalooch135 found OX0818   Visit Log

Wasn't even counting on looking for any benchmarks and nearly stood on top of it!

Found it 07/11/2009 wolfpackcrue found OX0818   Visit Log

Found this benchmark while enjoying the view.
Found it 06/12/2009 Jaybee1 found OX0818   Visit Log

On vacation in the Tetons, from NC. What a view.
Jaybee1
Found it 09/17/2008 geomatrix found OX0818   Visit Log

Couldnt miss this shny disk almost tripped on it. Seems to match the 1964 description pretty good. Took picture but there are many of the same.. so wont upload.
Really tripped out this guy but not enough for him to ask why I was photographing the ground... it was more fun to let him just wonder??? We liked the drive and the view was awesome!
Found it 08/27/2008 shadowbuzz found OX0818   Visit Log

Easy to find, once you are there....
Found it 08/11/2008 The Wizard of Ahhhs found OX0818   Visit Log

My 1st Benchmark! Wow, I didn't even know you could log these.
Found it 08/11/2008 Emmbers found OX0818   Visit Log

Found this while sightseeing. It was a very pleasant surprise.

Found it 07/10/2008 kittzle found OX0818   Visit Log

Logging Reference #1 - 1931 for this benchmark

[Photos:]
photoReference #1
Found it 09/09/2007 kcepenn found OX0818   Visit Log

I found the BM disk that everyone is finding at this location. But I don't think that this disk, at the top of Signal Mtn at the overlook is the SIGNAL BM, OX0818. It is stamped SIGNAL as stated in the description but has additional information. It is stamped No. 1 1931 also and has an arrow on it. In the description for the Signal BM it says that one of the reference BMs to it is the BM stamped No. 1 1931. The description of OX0818 also states that it is set in a round concrete monument and this one is set in rock. But I did not see a listing for No. 1 1931 in order to claim it properly so I will claim it here. kcepenn

[Photos:]
photoClose up of No. 1 1931
photoWide view. BM at Wes's feet.
Found it 08/30/2007 Slider & Smurf found OX0818   Visit Log

Spotted this rather well-worn looking benchmark while sightseeing - great views of the surrounding valley.
Found it 07/12/2007 geotravler99 found OX0818   Visit Log

Found this at Signal Mt. Lookout and took a picture of it. Great view of the Jackson Hole Valley.
Found it 07/03/2007 penguin13 found OX0818   Visit Log

Found RM #1 at top of Signal Mountain drive. Pretty beat up. Did not find other markers.

[This entry was edited by penguin13 on Wednesday, July 25, 2007 at 2:43:07 PM.]
Found it 06/27/2007 AllInFunners found OX0818   Visit Log

Another great benchmark! Remember coming up here in my teens and Dad pointing out this benchmark to me.

[Photos:]
photoAnother great benchmark!
Found it 06/22/2007 oahairball found OX0818   Visit Log

Found RM1 in fair/good condition, near the signal mountain lookout. Could not find the actual mark, it is likely under the paved walkway.

Found it 09/13/2006 turtlex found OX0818   Visit Log

Not completely sure about the date. Was on a roadtrip with Pookie across the great US of A. We decided to take a side trip up to Signal Mountain and of course brought our GPS (hey a summit is a summit) with us. When, what to our eyes should appear, but our very first benchmark. It sure was a beauty.

Found it 08/15/2006 DivaDesDawg found OX0818   Visit Log

En route to Glacier National Park from Illinois, we drove through the Tetons and came across this lookout point. The views were awesome, and we just happened to see the USGS marker.

[Photos:]
photoSignal Mountain Benchmark
photoSignal Mountain wildflower
photoa great view from Signal Mountain
Found it 08/15/2006 Follow_the_Sun found OX0818   Visit Log

We went on vacation here and took a picture of this marker. I had done geocaching before but only realized today that people also log benchmarks. I looked up the EXIF info on the picture we took and backlogged this.
Found it 08/04/2006 searchingshirley found OX0818   Visit Log

Wow the world is beautiful from up here. We took a picture

[Photos:]
photoSignal Mtn. Geological Survey.JPG
Found it 08/03/2006 txfoux found OX0818   Visit Log

Found this on a road trip from Glacier NP to Yellowstone and finally Grand Teton NP. What a beautiful part of our country!

[Photos:]
photoRM1 1931 Signal Mt
photoViewl of the Tetons from Signal Mt at dusk
Didn't find it 06/01/2006 CallawayMT couldn't find OX0818   Visit Log

Found RM1, but the station if still there is covered by Asphalt. The view is still worth the drive.

[Photos:]
photoSignal RM1 - Grand Teton NP, WY
photoSignal - Grand Teton NP, WY
Possibly under this patch.
photoSignal - Grand Teton NP, WY
It's getting late.
Found it 08/04/2005 Bullsfan80586 found OX0818   Visit Log

We ran across this during our drive through Teton. Very cool sights to see from here.
Found it 07/11/2005 Timberbeast found OX0818   Visit Log

found this while on vacation in the Grand Tetons on top of Signal MTN.
Found it 05/30/2005 miammocar01 found OX0818   Visit Log

Found on Memorial Day. Great view.
Found it 09/18/2004 CacheFever found OX0818   Visit Log

Found this on a trip to the top of Signal Mountain. Larry and Dale, Springfield, MO

Documented History (by the NGS)

01/01/1946 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1946 (CL) THE STATION IS LOCATED ON THE SUMMIT OF SIGNAL MTN., A PROMINENT HILL AT THE FOOT OF JACKSON LAKE, ABOUT 1 MILE SOUTHEAST OF MORAN, ABOUT 25 MILES NORTH BY EAST OF JACKSON AND AT THE SITE OF THE U.S. FOREST SERVICE SIGNAL MTN. LOOKOUT CABIN. THE DISK IS SET IN CONCRETE FLUSH WITH THE SURFACE OF THE GROUND, 11 FEET WEST BY SOUTH OF THE OF THE SOUTHEAST CORNER OF THE CABIN, 10 FEET EAST BY SOUTH OF THE SOUTHWEST CORNER OF THE CABIN, 6 FEET SOUTH OF THE SOUTH WALL OF THE CABIN AND IS STAMPED SIGNAL 1946. THE ORIGINAL U.S. GEOLOGICAL SURVEY STATION SIGNAL MTN. IS SUPPOSEDLY DIRECTLY UNDER THE ALIDADE IN THE LOOKOUT CABIN BUT THE CABIN HAS A FLOOR AND FOUNDATION OF SOLID ROCK MASONRY AND THE MARK COULD NOT BE SEEN THROUGH AN ELECTRICAL WIRING PIPE AS SUGGESTED BY THE RECONNAISSANCE PARTY AND SO WAS NOT RECOVERED. USGS REFERENCE MARK NO. 1 1931 WAS RECOVERED AND USED AS A REFERENCE MARK FOR THIS STATION. USGS REFERENCE MARK NO. 2 1931 WAS FOUND IN A BOULDER LYING ALONG SIDE OF THE LOOKOUT CABIN, EVIDENTLY HAVING BEEN MOVED BY SOMEONE AND SO COULD NOT BE USED. REFERENCE MARK NO. 1 IS A U.S. GEOLOGICAL SURVEY REFERENCE MARK DISK SET FLUSH IN ROCK OUTCROP PROJECTING ABOUT 8 INCHES, AT THE EAST EDGE OF THE HILL, 19 FEET SOUTHEAST OF THE SOUTHWEST CORNER OF THE LOOKOUT CABIN, 17 FEET SOUTH BY WEST OF THE SOUTHEAST CORNER OF THE CABIN AND IS STAMPED SIGNAL MT. NO. 1 1931. IT IS SOUTH OF THE STATION. REFERENCE MARK NO. 2 IS A DISK SET FLUSH IN A CONCRETE MONUMENT PROJECTING ABOUT 3 INCHES, SET 20 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF THE LOOKOUT CABIN AND IS STAMPED SIGNAL NO 2 1946. IT IS WEST OF THE STATION. THE AZIMUTH MARK IS APPROXIMATELY 0.5 MILE SOUTHWEST OF THE STATION. THE DISK IS SET IN A CONCRETE MONUMENT PROJECTING ABOUT 4 INCHES, AND IS ON THE HIGHEST POINT OF A RIDGE ABOUT 0.1 MILE SOUTHWEST OF THE FIRST HARIPIN TURN BELOW THE STATION. IT IS STAMPED SIGNAL 1946. TO REACH FROM THE STATION GO EASTERLY AND WESTERLY DOWN THE ROAD FOR 0.8 MILE TO A HAIRPIN TURN TO THE RIGHT, FROM HERE LEAVE THE ROAD AND GO SOUTHWESTERLY OUT THE RIDGE FOR 0.1 MILE TO THE HIGHEST POINT AND THE MARK AS DESCRIBED. A TRAVERSE CONNECTION WAS MADE TO THE ALIDADE IN THE CENTER OF THE LOOKOUT CABIN. TO REACH THE STATION FROM THE DAM AND U.S. HIGHWAY NO. 187 IN MORAN GO SOUTH ON HIGHWAY NO. 187 FOR 1.3 MILES TO A ROAD LEFT AT SIGN SIGNAL MTN., TURN LEFT AND FOLLOW THIS ROAD UP SIGNAL MTN. FOR 4.0 MILES TO THE SUMMIT, THE LOOKOUT CABIN AND THE STATION AS DESCRIBED.
01/01/1950 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1950 (EBL) THE STATION WAS RECOVERED AS DESCRIBED AND ALL MARKS WERE FOUND IN GOOD CONDITION. REFERENCE MARK NO. 1 COULD NOT BE TAKEN BECAUSE OF THE HIGH STAND ERECTED THIS TIME. A NEW TO REACH FOLLOWS. TO REACH THE STATION FROM THE BRIDGE AND DAM IN MORAN. GO SOUTH ON U.S. HIGHWAY 187 FOR 1.3 MILES TO A ROAD LEFT AND SIGN SIGNAL MTN. TURN LEFT FOR 0.2 MILE TO A FORK. TAKE LEFT FORK AND FOLLOW THIS ROAD UP SIGNAL MTN. FOR 2.6 MILES TO A SHARP CURVE AND A RIDGE RUNNING SOUTH FROM THE ROAD, (THE AZIMUTH MARK IS ON THE HIGHEST POINT OF THIS RIDGE, ABOUT 0.1 MILE SOUTH OF THE ROAD), CONTINUE ON UP HILL FOR 0.8 MILE TO THE TOP OF THE HILL, THE LOOKOUT CABIN AND THE STATION.
01/01/1964 by CGS (MARK NOT FOUND)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1964 (JJC) THE STATION AND REFERENCE MARK NO. 1 WERE SEARCHED FOR BUT HAVE APPARENTLY BEEN LOST DUE TO THE CLEARING OFF OF THE TOP OF THE HILL. REFERENCE MARK NO. 2 WAS RECOVERED IN GOOD CONDITION. AND IS ABOUT 20 FEET EAST OF AND 15 FEET HIGHER THAN A PARKING AREA ON THE WEST SIDE OF THE HILL.
01/01/1968 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1968 RECOVERED. STATION MARK--STANDARD USC AND GS DISK, SET IN CONCRETE POST, STAMPED ---SIGNAL 1946---.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.