PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/04-23:12:30
G08     289.8          23.4               17.0 +/-    1.18      34.5 +/-    1.18  0.040 / 0.120
G10     9.8            63.2               14.8 +/-    0.43      16.3 +/-    0.43  0.050 / 0.120
G14     232.3          49.7               19.8 +/-    0.66      25.0 +/-    0.66  0.040 / 0.090
G18     66.2           50.0               16.2 +/-    0.81      20.5 +/-    0.81  0.050 / 0.080
G21     146.7          36.3               17.2 +/-    0.56      26.6 +/-    0.56  0.060 / 0.090
G24     55.4           25.8               14.6 +/-    0.73      28.0 +/-    0.73  0.050 / 0.130
G27     250.5          30.3               18.4 +/-    1.92      31.9 +/-    1.92  0.050 / 0.040