PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/11-13:57:40
G10     258.6          34.6                5.7 +/-    2.46       9.1 +/-    2.46  0.280 / 0.210
G13     46.2           23.2                4.6 +/-    2.51       9.3 +/-    2.51  0.100 / 0.230
G15     66.4           51.5                5.6 +/-    0.86       6.9 +/-    0.86  0.190 / 0.840
G16     286.5          15.0                1.9 +/-    5.61       4.7 +/-    5.61  0.190 / 0.570
G20     287.2          58.6                6.8 +/-    1.58       7.9 +/-    1.58  0.050 / 0.040
G21     348.7          66.5                3.9 +/-    1.10       4.2 +/-    1.10  0.050 / 0.040
G26     261.1          11.8                2.4 +/-   12.76       6.4 +/-   12.76  0.050 / 0.060
G27     321.7          12.0               -2.8 +/-   19.31      -7.5 +/-   19.31  0.060 / 0.060
G29     165.9          41.7                7.8 +/-    0.87      11.1 +/-    0.87  0.110 / 0.090