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_2013-01 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 -1.091801223892e-10 0.000000000000e+00 gfc 2 1 1.312228572694e-11 -1.468590550788e-11 gfc 2 2 -1.202042280656e-12 -8.711061253659e-12 gfc 3 0 6.550319296001e-13 0.000000000000e+00 gfc 3 1 3.456961704700e-14 7.745879694411e-15 gfc 3 2 4.412281465178e-14 5.859945496470e-15 gfc 3 3 2.599136663960e-14 -2.353313848283e-14 gfc 4 0 1.270952825848e-11 0.000000000000e+00 gfc 4 1 -3.732395286268e-14 4.131568986760e-14 gfc 4 2 2.347733898627e-15 1.648919105468e-14 gfc 4 3 0.000000000000e+00 0.000000000000e+00 gfc 4 4 0.000000000000e+00 0.000000000000e+00