PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/12-17:27:50
G10     248.0          23.7                9.3 +/-    2.04      18.6 +/-    2.04  0.040 / 0.050
G13     57.6           32.7                8.2 +/-    0.84      13.5 +/-    0.84  0.040 / 0.050
G15     91.0           57.2                9.7 +/-    0.76      11.3 +/-    0.76  0.040 / 0.040
G16     304.8          12.8                6.9 +/-    1.90      18.0 +/-    1.90  0.040 / 0.060
G18     265.8          55.3               11.0 +/-    0.64      13.0 +/-    0.64  0.140 / 0.370
G20     39.3           52.7                8.0 +/-    0.37       9.8 +/-    0.37  0.160 / 0.460
G21     335.1          60.8                9.4 +/-    0.56      10.6 +/-    0.56  0.150 / 0.380
G26     274.8          16.2                9.0 +/-    1.51      21.7 +/-    1.51  0.130 / 0.380
G29     161.0          47.4               12.3 +/-    0.79      16.1 +/-    0.79  0.040 / 0.120