PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/20-02:42:50
G01     318.5          19.3                7.0 +/-    2.70      15.6 +/-    2.70  0.160 / 0.420
G08     254.4          12.3               11.0 +/-    2.17      29.1 +/-    2.17  0.160 / 0.390
G10     82.5           52.0                8.8 +/-    1.00      10.8 +/-    1.00  0.150 / 0.220
G11     300.7          24.4                7.9 +/-    1.24      15.6 +/-    1.24  0.190 / 0.350
G14     299.3          70.4                8.6 +/-    0.59       9.0 +/-    0.59  0.040 / 0.050
G18     302.8          41.7                7.8 +/-    1.10      11.1 +/-    1.10  0.040 / 0.050
G20     85.9           60.4               10.9 +/-    1.64      12.3 +/-    1.64  0.070 / 0.200
G22     301.4          10.8                5.3 +/-    5.44      14.5 +/-    5.44  0.090 / 0.230
G31     173.4          45.8               10.6 +/-    0.98      14.2 +/-    0.98  0.240 / 0.370
G32     14.7           65.0                6.7 +/-    0.56       7.4 +/-    0.56  0.230 / 0.520