Monthly mean of earth tide (IERS2010) for details see http://ifg.tugraz.at/downloads/gravity-field-models/itsg-grace2018 begin_of_head ======================================== modelname model_earthTide_2009-12 product_type gravity_field earth_gravity_constant 3.9860044150e+14 radius 6.3781363000e+06 max_degree 4 norm fully_normalized errors no key L M C S end_of_head ========================================== gfc 0 0 0.000000000000e+00 0.000000000000e+00 gfc 1 0 0.000000000000e+00 0.000000000000e+00 gfc 1 1 0.000000000000e+00 0.000000000000e+00 gfc 2 0 5.922955074916e-10 0.000000000000e+00 gfc 2 1 -1.535140702835e-11 6.685575659177e-12 gfc 2 2 -1.499482956489e-11 5.418713201024e-12 gfc 3 0 -2.661776175077e-12 0.000000000000e+00 gfc 3 1 5.791424603971e-15 3.237742731644e-15 gfc 3 2 -5.610240927071e-14 2.726137235854e-14 gfc 3 3 -4.951713812030e-14 2.644614117821e-14 gfc 4 0 1.068527460984e-11 0.000000000000e+00 gfc 4 1 3.810836238476e-14 -1.812585218629e-14 gfc 4 2 2.835365634483e-14 -1.038513358176e-14 gfc 4 3 0.000000000000e+00 0.000000000000e+00 gfc 4 4 0.000000000000e+00 0.000000000000e+00