Table 1. Absolute gravity data at the three benchmark stations established in Bhutan.

Station code	AGTDGM	AGTLS	AGGDGM
Location	Thimphu, DGM	Thimphu, LS	Gelephu, DGM
Longitude (°E)	89.635	89.630	90.504
Latitude (°N)	27.474	27.481	26.924
Altitude (m a.s.l.)	2350	2409	284
Vertical gradient (mGal/m)	−0.2639 ± 0.0048	−0.2668 ± 0.0051	−0.2544 ± 0.003
Gravity at the benchmark (μGal)	978′367′276.63	978′357′349.94	978′837′282.28
Date of measurement	11-12.03.2015	13-14.03.2015	16.03.2015

DGM: Department of Geology and Mines. LS: Land Survey.