PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-08:12:40
G01     124.1          12.5                4.0 +/-    2.24      10.6 +/-    2.24  0.030 / 0.040
G07     62.5           68.3                5.5 +/-    0.59       5.9 +/-    0.59  0.040 / 0.040
G08     50.7           40.5                4.6 +/-    0.88       6.7 +/-    0.88  0.020 / 0.040
G09     177.0          33.9                8.1 +/-    1.65      13.2 +/-    1.65  0.030 / 0.040
G11     118.3          37.2                7.1 +/-    1.15      10.8 +/-    1.15  0.200 / 0.340
G13     320.2          14.2                1.2 +/-    1.91       3.2 +/-    1.91  0.160 / 0.320
G17     200.2          14.4                3.3 +/-    2.61       8.4 +/-    2.61  0.090 / 0.320
G18     101.5          17.4                5.5 +/-    1.33      13.0 +/-    1.33  0.120 / 0.300
G28     270.9          48.0                7.1 +/-    0.76       9.2 +/-    0.76  0.080 / 0.100
G30     332.2          60.8                4.5 +/-    0.58       5.1 +/-    0.58  0.080 / 0.100