PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-19:57:50
G05     51.7           12.3                7.2 +/-    3.15      19.1 +/-    3.15  0.050 / 0.050
G10     242.2          19.3               10.8 +/-    1.75      24.2 +/-    1.75  0.080 / 0.050
G13     64.4           34.4                8.6 +/-    1.61      13.8 +/-    1.61  0.090 / 0.330
G15     118.7          57.2               10.8 +/-    0.54      12.6 +/-    0.54  0.120 / 0.340
G16     305.5          15.1                6.7 +/-    1.76      16.5 +/-    1.76  0.200 / 0.150
G20     256.9          43.5               10.9 +/-    2.02      15.0 +/-    2.02  0.180 / 0.140
G21     322.0          52.9               10.0 +/-    0.64      12.2 +/-    0.64  0.090 / 0.130
G26     278.0          19.0                8.8 +/-    0.60      19.8 +/-    0.60  0.110 / 0.130
G29     161.0          62.7               11.1 +/-    0.89      12.3 +/-    0.89  0.030 / 0.040