%   latitude    longitude elevation(m) gravity(mGal)	# tc
   40.699800  -111.876083      1298.80   979777.688	1.59
   40.699900  -111.852883      1338.40   979773.312	2.02
   40.699800  -111.833283      1381.00   979768.875	2.60
   40.699583  -111.794100      1505.70   979746.312	5.74
   40.703900  -111.938083      1294.20   979779.375	0.80
   40.725800  -111.937883      1292.00   979782.125	0.78
   40.714100  -111.925300      1289.30   979779.688	0.90
   40.725583  -111.922600      1289.30   979780.875	0.92
   40.733383  -111.910400      1288.70   979781.000	1.12
   40.722300  -111.897900      1292.40   979779.312	1.24
   40.722300  -111.878800      1303.30   979779.000	1.51
   40.733383  -111.852883      1347.20   979776.375	2.05
   40.741383  -111.852883      1363.40   979776.312	2.14
   40.718300  -111.852800      1345.70   979774.125	1.97
   40.725300  -111.833583      1373.40   979770.812	2.73
   40.712600  -111.833283      1380.70   979770.625	2.54
   40.737800  -111.829883      1413.40   979768.500	2.76
   40.725083  -111.823783      1407.60   979768.375	3.11
   40.742900  -111.820383      1465.80   979760.688	3.10
   40.728883  -111.814600      1472.20   979758.812	3.83
   40.714100  -111.805300      1485.30   979754.125	4.57
   40.709400  -111.797600      1438.40   979760.625	8.14
   40.713300  -111.786600      1497.80   979743.688	9.71