PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/15-00:42:40
G08     285.6          23.3                9.8 +/-    0.72      20.0 +/-    0.72  0.040 / 0.060
G10     18.1           63.3               11.4 +/-    0.56      12.6 +/-    0.56  0.030 / 0.020
G14     236.3          53.1               12.8 +/-    2.07      15.6 +/-    2.07  0.090 / 0.100
G18     70.3           48.4               10.9 +/-    1.47      14.0 +/-    1.47  0.070 / 0.120
G21     148.5          33.3               11.9 +/-    0.97      19.5 +/-    0.97  0.100 / 0.130
G24     52.3           24.0                9.5 +/-    1.86      19.0 +/-    1.86  0.110 / 0.110
G27     246.8          28.2               12.1 +/-    0.95      22.0 +/-    0.95  0.100 / 0.070
G32     256.4          69.4               10.8 +/-    0.44      11.4 +/-    0.44  0.070 / 0.080