PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-19:12:50
G01     307.2          33.5                9.0 +/-    1.43      14.7 +/-    1.43  0.080 / 0.110
G10     106.2          39.2               10.1 +/-    0.39      14.9 +/-    0.39  0.090 / 0.110
G11     280.1          28.4                8.6 +/-    0.92      15.6 +/-    0.92  0.050 / 0.060
G14     358.8          66.8                7.6 +/-    1.01       8.2 +/-    1.01  0.040 / 0.070
G18     272.3          51.5               10.2 +/-    1.81      12.6 +/-    1.81  0.040 / 0.050
G20     120.6          13.9               11.0 +/-    2.38      28.1 +/-    2.38  0.040 / 0.060
G22     309.9          25.5                7.8 +/-    1.49      15.1 +/-    1.49  0.070 / 0.170
G25     76.3           15.2                8.5 +/-    1.54      20.9 +/-    1.54  0.080 / 0.190
G31     173.2          61.9               10.0 +/-    0.98      11.2 +/-    0.98  0.140 / 0.160
G32     35.1           53.2                8.1 +/-    0.46       9.8 +/-    0.46  0.090 / 0.130