Gravimeter

Data period

Scale factor (μGal/volt)

Noise level (μGal)

Drift rate (μGal/year)

Cryocooler

TT-70 #016

1993.4 - 2003.11

−58.165 ± 0.061

±3

−15

APS DE202NF

CT #043

2003.12 - 2009.12

−59.461 ± 0.079

±1

239

Leybold 4.2LAB

OSG #058

2010.01-

−73.8226 ± 0.053

±0.2

<±5

SHI SDRK 101