PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/11-09:12:40
G01     81.7           33.1                4.9 +/-    0.68       8.1 +/-    0.68  0.030 / 0.030
G07     131.5          38.1                8.7 +/-    0.89      13.1 +/-    0.89  0.030 / 0.030
G11     59.8           35.4                5.8 +/-    1.02       9.1 +/-    1.02  0.050 / 0.050
G13     285.6          37.9                4.2 +/-    1.55       6.3 +/-    1.55  0.040 / 0.050
G17     220.5          62.9                8.3 +/-    1.02       9.2 +/-    1.02  0.070 / 0.100
G18     55.2           20.9                6.0 +/-    4.18      12.8 +/-    4.18  0.080 / 0.080
G19     218.3          29.9                9.7 +/-    1.92      17.1 +/-    1.92  0.330 / 0.210
G28     0.4            61.3                4.7 +/-    0.94       5.3 +/-    0.94  0.300 / 0.190
G30     121.8          72.2                7.5 +/-    1.01       7.8 +/-    1.01  0.090 / 0.130