PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/17-18:58:10
G05     52.1           11.8               10.9 +/-    1.32      29.2 +/-    1.32  0.130 / 0.180
G10     242.7          18.6               12.9 +/-    2.12      29.4 +/-    2.12  0.190 / 0.220
G13     65.4           35.6               11.5 +/-    0.65      18.1 +/-    0.65  0.070 / 0.070
G15     106.2          56.6               13.8 +/-    0.45      16.2 +/-    0.45  0.060 / 0.070
G16     310.0          12.4               10.8 +/-    2.43      28.7 +/-    2.43  0.150 / 0.250
G18     256.2          50.0               13.9 +/-    0.75      17.5 +/-    0.75  0.130 / 0.290
G20     34.9           58.0               12.1 +/-    0.39      14.0 +/-    0.39  0.050 / 0.050
G21     324.9          55.3               12.0 +/-    0.95      14.3 +/-    0.95  0.050 / 0.050
G26     282.9          17.8               12.5 +/-    1.05      29.1 +/-    1.05  0.140 / 0.360
G29     158.4          55.4               15.7 +/-    1.13      18.6 +/-    1.13  0.140 / 0.370