PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-03:43:10
G08     288.9          23.6                8.3 +/-    1.59      16.8 +/-    1.59  0.070 / 0.110
G10     10.5           63.3                5.5 +/-    0.50       6.1 +/-    0.50  0.050 / 0.100
G14     232.9          50.5                9.0 +/-    0.86      11.3 +/-    0.86  0.040 / 0.070
G18     64.9           51.2                6.5 +/-    0.90       8.0 +/-    0.90  0.040 / 0.070
G21     147.2          37.9                9.5 +/-    1.11      14.2 +/-    1.11  0.050 / 0.120
G24     55.0           25.6                6.3 +/-    0.77      12.2 +/-    0.77  0.040 / 0.100
G27     250.0          30.0                8.8 +/-    1.81      15.4 +/-    1.81  0.030 / 0.030
G32     250.9          68.8                6.8 +/-    0.46       7.2 +/-    0.46  0.040 / 0.040