PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/20-01:42:40
G08     306.7          20.5                8.8 +/-    1.38      19.1 +/-    1.38  0.060 / 0.080
G10     333.1          60.1                9.0 +/-    0.53      10.2 +/-    0.53  0.050 / 0.100
G14     219.1          34.1               12.6 +/-    1.50      20.3 +/-    1.50  0.040 / 0.040
G15     47.0           11.0                8.5 +/-    0.92      23.2 +/-    0.92  0.030 / 0.030
G18     39.6           59.3                8.3 +/-    0.40       9.5 +/-    0.40  0.050 / 0.050
G21     135.3          55.1               12.5 +/-    1.13      14.9 +/-    1.13  0.030 / 0.050
G24     73.7           30.5               10.5 +/-    0.56      18.2 +/-    0.56  0.060 / 0.140
G27     270.8          37.3               11.2 +/-    1.35      17.1 +/-    1.35  0.050 / 0.130
G32     225.0          52.1               12.4 +/-    1.01      15.3 +/-    1.01  0.060 / 0.070