PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-13:58:10
G01     95.0           30.3                7.9 +/-    0.88      13.7 +/-    0.88  0.040 / 0.030
G07     121.6          46.1               10.2 +/-    1.08      13.5 +/-    1.08  0.030 / 0.020
G08     42.0           9.4                 7.1 +/-    1.94      20.2 +/-    1.94  0.050 / 0.050
G11     72.0           38.9                8.5 +/-    1.65      12.6 +/-    1.65  0.040 / 0.050
G13     301.3          32.9                6.4 +/-    1.90      10.6 +/-    1.90  0.060 / 0.110
G17     210.9          51.8                8.9 +/-    1.30      11.0 +/-    1.30  0.050 / 0.140
G19     212.5          24.7               10.0 +/-    2.35      19.7 +/-    2.35  0.040 / 0.050
G28     340.5          61.7                8.2 +/-    0.59       9.1 +/-    0.59  0.030 / 0.050
G30     73.3           79.9                7.8 +/-    0.49       8.0 +/-    0.49  0.050 / 0.090