PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-19:43:00
G01     95.5           30.5               14.0 +/-    0.69      24.3 +/-    0.69  0.080 / 0.190
G07     120.9          49.9               14.5 +/-    0.31      18.3 +/-    0.31  0.070 / 0.170
G08     42.1           13.9                7.9 +/-    0.56      20.1 +/-    0.56  0.060 / 0.110
G11     75.6           42.0               13.5 +/-    0.81      19.1 +/-    0.81  0.070 / 0.130
G13     299.8          34.2               11.6 +/-    1.31      18.7 +/-    1.31  0.030 / 0.050
G17     212.3          45.1               15.7 +/-    1.72      21.2 +/-    1.72  0.030 / 0.050
G18     69.0           24.7               12.0 +/-    0.67      23.6 +/-    0.67  0.040 / 0.050
G19     212.8          21.8               16.3 +/-    1.51      34.2 +/-    1.51  0.040 / 0.050
G28     340.7          61.9               11.9 +/-    0.68      13.3 +/-    0.68  0.040 / 0.090
G30     88.9           77.7               12.9 +/-    0.74      13.1 +/-    0.74  0.050 / 0.090