PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-03:13:00
G01     320.1          14.0                8.6 +/-    1.62      22.0 +/-    1.62  0.030 / 0.020
G08     260.1          15.6               10.9 +/-    2.37      26.7 +/-    2.37  0.020 / 0.020
G10     70.4           56.7               10.0 +/-    0.71      11.7 +/-    0.71  0.030 / 0.030
G11     305.8          22.4               10.6 +/-    1.02      22.0 +/-    1.02  0.030 / 0.030
G14     286.1          70.3                9.1 +/-    0.54       9.6 +/-    0.54  0.040 / 0.040
G18     96.8           33.4                9.8 +/-    1.74      16.1 +/-    1.74  0.040 / 0.040
G27     226.2          11.5               11.4 +/-    1.89      30.8 +/-    1.89  0.200 / 0.430
G31     177.9          35.7               11.1 +/-    1.93      17.4 +/-    1.93  0.200 / 0.370
G32     350.5          71.5                9.2 +/-    1.13       9.7 +/-    1.13  0.060 / 0.100