PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-12:28:00
G05     51.5           10.8                3.6 +/-    2.60       9.8 +/-    2.60  0.200 / 0.200
G10     240.7          16.8                4.0 +/-    1.43       9.5 +/-    1.43  0.330 / 0.240
G13     68.2           36.0                3.6 +/-    0.81       5.6 +/-    0.81  0.110 / 0.170
G15     109.4          55.6                6.2 +/-    0.45       7.3 +/-    0.45  0.070 / 0.130
G16     310.4          13.0                3.3 +/-    2.99       8.6 +/-    2.99  0.030 / 0.040
G18     254.0          49.8                4.1 +/-    4.04       5.2 +/-    4.04  0.030 / 0.030
G20     27.9           64.1                4.3 +/-    0.39       4.7 +/-    0.39  0.040 / 0.050
G21     323.2          54.2                2.2 +/-    0.59       2.7 +/-    0.59  0.030 / 0.050
G26     281.5          19.2                3.5 +/-    1.17       7.7 +/-    1.17  0.280 / 0.460
G29     158.4          61.7                6.0 +/-    0.47       6.7 +/-    0.47  0.160 / 0.340