PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-13:28:10
G01     41.0           16.5                6.3 +/-    2.98      15.1 +/-    2.98  0.090 / 0.110
G06     174.0          37.8                7.4 +/-    1.12      11.2 +/-    1.12  0.060 / 0.130
G13     237.6          23.6                8.7 +/-    1.43      17.6 +/-    1.43  0.030 / 0.030
G15     272.8          12.6                5.7 +/-    1.98      15.1 +/-    1.98  0.020 / 0.020
G17     346.4          73.7                6.6 +/-    0.85       6.9 +/-    0.85  0.200 / 0.230
G19     274.9          69.8                6.7 +/-    0.87       7.1 +/-    0.87  0.300 / 0.410
G24     317.1          17.0                5.5 +/-    1.61      13.0 +/-    1.61  0.050 / 0.070
G28     62.1           52.4                5.6 +/-    0.92       6.8 +/-    0.92  0.050 / 0.070
G30     154.3          29.4                6.6 +/-    0.91      11.7 +/-    0.91  0.050 / 0.040