PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/11-14:12:30
G01     85.2           32.5                6.8 +/-    0.56      11.3 +/-    0.56  0.040 / 0.080
G07     129.1          38.8                7.9 +/-    0.76      11.7 +/-    0.76  0.040 / 0.070
G11     62.8           35.4                5.5 +/-    0.83       8.7 +/-    0.83  0.070 / 0.140
G13     292.1          35.8                7.8 +/-    1.32      12.2 +/-    1.32  0.060 / 0.140
G17     217.6          60.3               10.6 +/-    0.68      12.0 +/-    0.68  0.030 / 0.030
G19     216.4          32.6                8.3 +/-    1.12      13.8 +/-    1.12  0.020 / 0.030
G28     357.2          61.2                6.7 +/-    0.47       7.5 +/-    0.47  0.030 / 0.050
G30     111.1          75.1                7.7 +/-    0.45       8.0 +/-    0.45  0.030 / 0.040