GRACE LEGOS V1.00 is an ensemble of 1500 solutions considering  variation on 6 different processing parameters namely the processing centers (CSR, GFZ—GeoforschungsZentrum-, JPL, GRGS—Groupe de Recherche de Geodesie Spatiale-, and TUG—Graz University of Technology), the geocenter motion (Cheng et al. 2013, Lemoine & Reinquin 2017, Rietbroek et al. 2012, Swenson et al. 2008 and Wu et al.2017)and C20 (Cheng et al. 2011 and  Lemoine & Reinquin 2017) corrections, the filtering (4 from Kusche et al. 2009, Chen et al 2007),the leakage correction over a 300-km-wide zone off the coastlines based on comparison with observation-based ocean mass estimates ( 2 ocean reanalysis) and the GIA correction ( A et al. 2013, Peltier et al. 2017 and Purcell et al. 2018.)

Please quote: 
Blazquez A., Meyssignac B., Lemoine JM., Berthier E., Ribes A., Cazenave A.; Exploring the uncertainty in GRACE estimates of the mass redistributions at the Earth surface: implications for the global water and sea level budgets, Geophysical Journal International, Volume 215, Issue 1, 1 October 2018, Pages 415–430, https://doi.org/10.1093/gji/ggy293

* grace_Legos.nc is a netcdf file containing the mean and 1.65 standard deviation (90% Confidence Level) of the ensemble
* grace_Legos_ensemble.nc is a netcdf file containing the whole ensemble (available on demand)
* Ocean_mass_and_contributors.dat is a text file containing the global series