PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/17-07:12:40
G01     96.0           30.2                7.9 +/-    0.70      13.7 +/-    0.70  0.040 / 0.050
G07     120.5          48.9                7.9 +/-    0.95      10.1 +/-    0.95  0.030 / 0.050
G08     41.9           10.9                3.1 +/-    2.81       8.6 +/-    2.81  0.030 / 0.040
G11     75.0           40.8                5.5 +/-    0.93       7.9 +/-    0.93  0.040 / 0.040
G13     301.6          33.0                2.0 +/-    1.18       3.2 +/-    1.18  0.040 / 0.030
G17     210.8          50.1                8.9 +/-    0.53      11.2 +/-    0.53  0.030 / 0.040
G19     212.3          23.8                6.7 +/-    2.17      13.6 +/-    2.17  0.100 / 0.300
G28     340.4          61.8                3.9 +/-    0.46       4.3 +/-    0.46  0.110 / 0.320
G30     82.7           78.3                6.0 +/-    0.77       6.1 +/-    0.77  0.060 / 0.090