PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-18:58:10
G10     258.6          33.1               12.7 +/-    1.30      20.8 +/-    1.30  0.130 / 0.440
G13     46.5           24.1               11.9 +/-    0.90      23.7 +/-    0.90  0.130 / 0.290
G15     75.2           57.3               12.1 +/-    0.31      14.1 +/-    0.31  0.040 / 0.050
G16     286.8          14.4               10.4 +/-    1.52      26.1 +/-    1.52  0.040 / 0.050
G20     282.9          56.2               13.5 +/-    1.07      15.9 +/-    1.07  0.120 / 0.390
G21     347.9          66.7               11.8 +/-    0.56      12.7 +/-    0.56  0.120 / 0.320
G26     260.3          11.7               11.8 +/-    1.72      31.6 +/-    1.72  0.070 / 0.160
G27     322.1          10.9               -9.0 +/-   34.17     -24.7 +/-   34.17  0.070 / 0.220
G29     166.5          40.3               13.3 +/-    0.63      19.3 +/-    0.63  0.040 / 0.040