PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-16:57:40
G08     268.8          19.9                6.5 +/-    0.93      14.3 +/-    0.93  0.210 / 0.270
G10     55.1           59.2                7.8 +/-    0.51       8.9 +/-    0.51  0.180 / 0.360
G11     313.2          15.9               -3.4 +/-   16.20      -8.3 +/-   16.20  0.160 / 0.430
G14     259.5          64.8                7.9 +/-    0.35       8.7 +/-    0.35  0.130 / 0.460
G18     313.0          32.1                7.4 +/-    1.91      12.4 +/-    1.91  0.070 / 0.060
G20     91.8           38.9                9.5 +/-    0.56      14.0 +/-    0.56  0.070 / 0.050
G21     153.1          15.3               11.0 +/-    1.98      27.2 +/-    1.98  0.030 / 0.030
G27     237.3          19.1                8.5 +/-    1.50      19.1 +/-    1.50  0.030 / 0.040
G31     182.2          22.7               11.6 +/-    2.47      23.8 +/-    2.47  0.120 / 0.200
G32     318.2          75.5                9.5 +/-    0.61       9.8 +/-    0.61  0.140 / 0.230