The International Mass Loading Service computes four loadings: 
a) atmospheric pressure loading; b) land water storage loading; c) oceanic 
tidal loading; and d) non-tidal oceanic loading. The service provides to 
users the mass loading time series in three forms: 1) pre-computed time series 
for a list of 849 space geodesy stations; 2) pre-computed time series on the
global 1x1 degrees grid; and 3) on-demand Internet service for a list 
of stations and a time range specified by the user. The loading displacements
are provided for the time period from 1979.01.01 through present, updated 
on an hourly basis, and have latencies 8-20 hours.