PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/11-09:27:40
G02     74.2           19.8                4.0 +/-    0.79       9.0 +/-    0.79  0.030 / 0.060
G05     45.7           44.2                3.1 +/-    0.59       4.3 +/-    0.59  0.040 / 0.050
G12     182.5          16.8                4.0 +/-    1.49       9.5 +/-    1.49  0.040 / 0.040
G13     114.5          26.3                6.4 +/-    0.96      12.2 +/-    0.96  0.040 / 0.030
G15     152.8          26.8                6.9 +/-    1.99      13.0 +/-    1.99  0.060 / 0.150
G20     227.0          72.6                5.2 +/-    0.41       5.4 +/-    0.41  0.190 / 0.150
G21     286.3          29.6                3.8 +/-    1.14       6.7 +/-    1.14  0.140 / 0.310
G25     219.1          38.2                6.0 +/-    2.00       9.0 +/-    2.00  0.120 / 0.300
G26     316.8          12.6                3.0 +/-    1.39       7.8 +/-    1.39  0.120 / 0.090
G29     343.7          73.2                5.1 +/-    0.46       5.3 +/-    0.46  0.080 / 0.130