PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/23-17:12:50
G10     259.9          33.0               11.7 +/-    1.92      19.3 +/-    1.92  0.110 / 0.180
G13     46.3           24.5                9.4 +/-    2.34      18.5 +/-    2.34  0.110 / 0.160
G15     66.6           52.3               10.3 +/-    0.99      12.7 +/-    0.99  0.040 / 0.040
G16     290.9          12.6                9.7 +/-    0.98      25.5 +/-    0.98  0.030 / 0.040
G18     289.3          62.8               10.8 +/-    0.89      12.0 +/-    0.89  0.040 / 0.060
G20     48.7           41.8                9.2 +/-    1.05      13.0 +/-    1.05  0.040 / 0.090
G21     359.3          69.8               11.3 +/-    0.40      12.0 +/-    0.40  0.150 / 0.280
G26     261.8          11.0               11.7 +/-    2.31      32.0 +/-    2.31  0.110 / 0.310
G27     320.6          14.7                7.4 +/-    2.40      18.6 +/-    2.40  0.210 / 0.330
G29     164.7          33.3               13.7 +/-    0.88      22.4 +/-    0.88  0.220 / 0.380