PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/26-14:27:50
G01     47.9           23.5                6.6 +/-    0.62      13.4 +/-    0.62  0.060 / 0.180
G06     177.5          27.7               10.4 +/-    1.28      19.1 +/-    1.28  0.050 / 0.170
G11     43.5           10.4                6.0 +/-    2.93      16.5 +/-    2.93  0.040 / 0.050
G13     249.9          28.8                8.3 +/-    1.70      15.0 +/-    1.70  0.040 / 0.060
G15     283.2          15.1                6.8 +/-    1.71      16.9 +/-    1.71  0.060 / 0.120
G17     340.9          76.9                9.7 +/-    0.61       9.9 +/-    0.61  0.050 / 0.120
G19     253.9          64.3                9.1 +/-    0.94       9.9 +/-    0.94  0.030 / 0.030
G28     57.1           51.5                7.7 +/-    0.66       9.5 +/-    0.66  0.020 / 0.030
G30     151.1          40.3                9.5 +/-    1.57      13.8 +/-    1.57  0.110 / 0.260