PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/13-17:57:30
G05     48.5           19.9                9.0 +/-    1.19      19.9 +/-    1.19  0.070 / 0.080
G10     236.8          13.5               12.3 +/-    4.01      31.8 +/-    4.01  0.040 / 0.070
G13     74.1           36.0                9.9 +/-    1.05      15.4 +/-    1.05  0.110 / 0.350
G15     129.5          52.4               11.4 +/-    0.72      14.0 +/-    0.72  0.100 / 0.310
G16     313.1          12.9                8.5 +/-    3.32      22.3 +/-    3.32  0.090 / 0.180
G20     249.0          37.7               12.7 +/-    1.82      19.2 +/-    1.82  0.080 / 0.160
G21     314.9          48.2                9.6 +/-    0.97      12.4 +/-    0.97  0.070 / 0.130
G26     286.8          20.1                9.2 +/-    1.81      20.2 +/-    1.81  0.070 / 0.120
G29     155.7          71.4               10.9 +/-    1.11      11.4 +/-    1.11  0.040 / 0.040