PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-15:12:50
G02     74.2           20.2                8.7 +/-    0.88      19.0 +/-    0.88  0.030 / 0.050
G05     45.8           46.2                7.1 +/-    0.64       9.4 +/-    0.64  0.030 / 0.050
G12     182.4          16.2               10.1 +/-    4.83      24.3 +/-    4.83  0.070 / 0.160
G13     114.6          26.6               12.6 +/-    1.01      23.7 +/-    1.01  0.180 / 0.140
G15     152.8          27.0               13.2 +/-    0.80      24.7 +/-    0.80  0.040 / 0.030
G18     224.1          17.4                8.3 +/-    2.03      19.5 +/-    2.03  0.040 / 0.040
G20     227.9          77.3               10.8 +/-    0.61      11.0 +/-    0.61  0.070 / 0.140
G21     287.5          31.3                8.9 +/-    1.37      15.2 +/-    1.37  0.060 / 0.130
G25     216.9          37.0               11.0 +/-    1.68      16.9 +/-    1.68  0.080 / 0.190
G29     354.6          77.1                6.7 +/-    0.42       6.8 +/-    0.42  0.060 / 0.170