PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/12-08:57:50
G01     116.6          18.3                5.3 +/-    0.75      12.1 +/-    0.75  0.040 / 0.040
G07     86.3           64.3                5.8 +/-    1.05       6.4 +/-    1.05  0.040 / 0.030
G08     45.4           33.2                3.2 +/-    1.64       5.3 +/-    1.64  0.140 / 0.190
G09     176.1          24.7                4.9 +/-    1.55       9.6 +/-    1.55  0.280 / 0.300
G11     107.0          41.6                6.5 +/-    0.82       9.2 +/-    0.82  0.120 / 0.150
G13     316.6          21.5                2.8 +/-    1.84       5.8 +/-    1.84  0.130 / 0.120
G17     201.9          23.2                4.2 +/-    1.61       8.5 +/-    1.61  0.050 / 0.090
G18     92.3           21.3                6.1 +/-    1.05      12.9 +/-    1.05  0.080 / 0.070
G28     284.4          53.0                4.4 +/-    1.57       5.4 +/-    1.57  0.030 / 0.030
G30     344.9          68.7                5.1 +/-    1.07       5.5 +/-    1.07  0.040 / 0.030