PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/16-17:27:40
G02     72.3           22.2                9.1 +/-    0.54      19.0 +/-    0.54  0.030 / 0.040
G05     46.6           49.6                7.8 +/-    0.94       9.9 +/-    0.94  0.030 / 0.040
G12     182.5          17.5               11.0 +/-    1.92      25.8 +/-    1.92  0.100 / 0.210
G13     116.6          25.5               11.6 +/-    1.18      22.3 +/-    1.18  0.080 / 0.150
G15     154.6          25.0               13.4 +/-    1.57      26.2 +/-    1.57  0.070 / 0.040
G18     223.3          15.1               12.8 +/-    2.15      31.8 +/-    2.15  0.040 / 0.040
G20     223.7          76.7               10.3 +/-    0.61      10.5 +/-    0.61  0.070 / 0.190
G21     285.0          28.8                7.5 +/-    1.05      13.6 +/-    1.05  0.070 / 0.210
G25     217.0          38.2               14.1 +/-    1.39      21.2 +/-    1.39  0.060 / 0.170
G29     350.7          75.3                9.9 +/-    0.42      10.2 +/-    0.42  0.070 / 0.170