PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/24-20:28:10
G10     264.1          36.6               11.4 +/-    0.89      17.6 +/-    0.89  0.040 / 0.040
G13     43.2           20.2                8.7 +/-    3.06      19.0 +/-    3.06  0.040 / 0.030
G15     67.2           55.1                9.6 +/-    0.68      11.5 +/-    0.68  0.140 / 0.190
G16     281.2          13.1                7.8 +/-    2.24      20.3 +/-    2.24  0.130 / 0.190
G20     292.2          59.0                9.9 +/-    0.93      11.4 +/-    0.93  0.110 / 0.320
G21     357.0          70.1               10.7 +/-    0.75      11.3 +/-    0.75  0.120 / 0.330
G24     120.2          12.9               11.9 +/-    2.76      31.1 +/-    2.76  0.240 / 0.300
G27     320.3          15.6                8.5 +/-    1.37      20.9 +/-    1.37  0.190 / 0.260
G29     167.6          34.6               11.5 +/-    1.83      18.3 +/-    1.83  0.070 / 0.090