PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-19:13:00
G10     258.7          32.1               29.5 +/-    2.49      49.4 +/-    2.49  0.120 / 0.500
G13     47.2           25.6               22.6 +/-    0.97      43.6 +/-    0.97  0.130 / 0.620
G15     69.1           53.4               25.3 +/-    0.26      30.6 +/-    0.26  0.050 / 0.050
G16     292.0          12.8               25.2 +/-    2.07      66.0 +/-    2.07  0.040 / 0.050
G18     285.8          61.7               24.2 +/-    0.67      27.1 +/-    0.67  0.100 / 0.220
G20     48.5           41.8               23.1 +/-    0.37      32.7 +/-    0.37  0.110 / 0.260
G21     352.7          68.3               32.3 +/-    0.64      34.5 +/-    0.64  0.070 / 0.070
G26     264.4          11.5               25.7 +/-    2.70      69.4 +/-    2.70  0.050 / 0.090
G27     320.9          13.8               20.6 +/-    2.57      52.8 +/-    2.57  0.130 / 0.370
G29     164.2          34.0               28.7 +/-    0.83      46.4 +/-    0.83  0.140 / 0.380