PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/18-14:12:40
G01     44.9           21.0                5.1 +/-    1.41      11.0 +/-    1.41  0.050 / 0.090
G06     174.4          34.0                8.4 +/-    1.32      13.5 +/-    1.32  0.060 / 0.090
G13     243.2          26.3                8.6 +/-    1.15      16.3 +/-    1.15  0.170 / 0.370
G15     280.6          13.5                5.2 +/-    1.11      13.5 +/-    1.11  0.150 / 0.340
G17     350.2          74.6                7.5 +/-    0.55       7.7 +/-    0.55  0.090 / 0.180
G19     256.0          61.7                5.7 +/-    1.12       6.4 +/-    1.12  0.090 / 0.170
G24     317.8          15.4                2.8 +/-    1.69       6.8 +/-    1.69  0.100 / 0.110
G28     62.3           50.1                6.5 +/-    0.75       8.2 +/-    0.75  0.110 / 0.090
G30     153.1          35.8                7.1 +/-    1.04      11.1 +/-    1.04  0.080 / 0.210