PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/29-03:12:40
G08     306.7          20.5                6.4 +/-    1.90      13.9 +/-    1.90  0.040 / 0.040
G10     333.0          60.0                6.3 +/-    0.74       7.2 +/-    0.74  0.040 / 0.040
G14     219.1          34.1                7.1 +/-    1.51      11.5 +/-    1.51  0.050 / 0.070
G15     47.0           11.9                5.2 +/-    1.93      13.9 +/-    1.93  0.050 / 0.050
G18     38.4           59.7                6.8 +/-    0.39       7.7 +/-    0.39  0.070 / 0.130
G21     135.3          55.6                8.2 +/-    0.82       9.7 +/-    0.82  0.060 / 0.140
G24     73.7           30.5                7.1 +/-    0.33      12.3 +/-    0.33  0.060 / 0.090
G27     270.8          37.3                8.0 +/-    1.09      12.1 +/-    1.09  0.050 / 0.090
G32     225.0          53.0                9.0 +/-    1.08      10.9 +/-    1.08  0.070 / 0.080