PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-08:13:10
G01     123.8          12.7                4.8 +/-    2.06      12.6 +/-    2.06  0.030 / 0.030
G07     63.8           68.2                5.7 +/-    0.55       6.1 +/-    0.55  0.030 / 0.030
G08     50.3           40.2                2.6 +/-    0.92       3.8 +/-    0.92  0.130 / 0.300
G09     177.0          33.4                8.0 +/-    1.23      13.0 +/-    1.23  0.130 / 0.290
G11     117.8          37.4                5.9 +/-    0.80       9.0 +/-    0.80  0.060 / 0.080
G13     320.0          14.6                3.1 +/-    2.87       7.7 +/-    2.87  0.070 / 0.100
G17     200.3          14.8                3.1 +/-    3.35       7.8 +/-    3.35  0.030 / 0.050
G18     101.0          17.6                5.4 +/-    1.29      12.6 +/-    1.29  0.060 / 0.050
G28     271.5          48.3                7.2 +/-    2.09       9.3 +/-    2.09  0.030 / 0.040
G30     332.7          61.2                4.7 +/-    0.82       5.3 +/-    0.82  0.030 / 0.030