PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/18-15:57:40
G02     84.1           13.2                8.1 +/-    1.82      21.2 +/-    1.82  0.040 / 0.080
G05     44.3           35.3                7.1 +/-    0.73      11.2 +/-    0.73  0.050 / 0.070
G13     96.4           32.5               10.0 +/-    0.53      16.7 +/-    0.53  0.050 / 0.130
G15     142.8          39.5                8.7 +/-    0.71      12.8 +/-    0.71  0.060 / 0.110
G20     235.2          25.3                9.9 +/-    1.62      19.2 +/-    1.62  0.180 / 0.210
G21     297.8          35.6                8.8 +/-    0.98      13.7 +/-    0.98  0.160 / 0.260
G25     209.1          26.1                9.1 +/-    1.04      17.3 +/-    1.04  0.070 / 0.130
G26     304.6          18.3                7.5 +/-    1.33      17.1 +/-    1.33  0.080 / 0.170
G29     15.5           85.2                6.6 +/-    0.38       6.6 +/-    0.38  0.020 / 0.030