PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-09:27:50
G01     118.3          18.5                5.0 +/-    1.31      11.5 +/-    1.31  0.030 / 0.040
G07     84.4           65.5                5.7 +/-    0.59       6.2 +/-    0.59  0.030 / 0.040
G08     44.0           28.8                1.6 +/-    0.84       2.8 +/-    0.84  0.020 / 0.040
G09     173.6          20.7                5.0 +/-    0.94      10.9 +/-    0.94  0.020 / 0.030
G11     103.8          40.4                7.0 +/-    0.47      10.1 +/-    0.47  0.150 / 0.280
G13     317.1          20.5                2.3 +/-    2.27       5.0 +/-    2.27  0.160 / 0.250
G17     201.3          27.1                5.5 +/-    0.78      10.3 +/-    0.78  0.100 / 0.400
G18     91.7           21.1                5.6 +/-    0.64      12.0 +/-    0.64  0.090 / 0.340
G28     293.0          57.2                4.3 +/-    0.94       5.0 +/-    0.94  0.100 / 0.170
G30     344.8          68.4                2.6 +/-    0.91       2.8 +/-    0.91  0.100 / 0.200