PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/16-17:43:10
G10     260.9          33.7                9.8 +/-    1.62      15.9 +/-    1.62  0.100 / 0.220
G13     45.6           23.8                8.3 +/-    2.60      16.6 +/-    2.60  0.100 / 0.190
G15     65.3           51.7                9.6 +/-    1.15      11.9 +/-    1.15  0.030 / 0.040
G16     290.3          12.3                9.0 +/-    2.14      23.9 +/-    2.14  0.040 / 0.030
G18     291.2          63.1                8.9 +/-    0.77       9.9 +/-    0.77  0.050 / 0.070
G20     49.6           40.7                7.6 +/-    0.98      11.0 +/-    0.98  0.050 / 0.070
G21     0.6            70.3               16.4 +/-    0.69      17.3 +/-    0.69  0.170 / 0.140
G27     320.2          15.6                6.3 +/-    2.33      15.5 +/-    2.33  0.080 / 0.290
G29     164.7          31.8               12.2 +/-    0.99      20.6 +/-    0.99  0.260 / 0.430