PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/18-10:43:00
G01     52.0           26.4                4.5 +/-    1.39       8.5 +/-    1.39  0.040 / 0.070
G06     177.2          21.8                6.1 +/-    1.15      12.8 +/-    1.15  0.050 / 0.060
G07     144.4          14.4                5.0 +/-    1.17      12.7 +/-    1.17  0.110 / 0.290
G11     45.8           19.9                1.0 +/-    1.06       2.2 +/-    1.06  0.110 / 0.330
G13     253.0          33.2                6.2 +/-    1.79      10.2 +/-    1.79  0.030 / 0.030
G15     287.7          15.9                3.1 +/-    4.55       7.5 +/-    4.55  0.040 / 0.030
G17     281.7          78.1                6.8 +/-    0.82       6.9 +/-    0.82  0.060 / 0.130
G19     240.7          58.9                9.0 +/-    0.88      10.3 +/-    0.88  0.050 / 0.140
G28     35.2           58.3                4.0 +/-    0.51       4.7 +/-    0.51  0.040 / 0.060
G30     148.4          47.0                7.0 +/-    1.34       9.1 +/-    1.34  0.040 / 0.040