PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/16-11:12:50
G02     73.7           20.2                4.2 +/-    0.65       9.1 +/-    0.65  0.020 / 0.040
G05     45.9           45.3                2.5 +/-    0.48       3.3 +/-    0.48  0.030 / 0.040
G12     182.7          17.5                4.9 +/-    4.78      11.5 +/-    4.78  0.070 / 0.150
G13     115.3          25.9                6.8 +/-    1.13      13.1 +/-    1.13  0.090 / 0.180
G15     153.1          26.2                7.5 +/-    1.00      14.2 +/-    1.00  0.110 / 0.220
G18     223.6          17.4                3.3 +/-    1.51       7.7 +/-    1.51  0.090 / 0.150
G20     225.8          73.4                6.6 +/-    0.80       6.8 +/-    0.80  0.050 / 0.040
G21     286.3          30.2                4.9 +/-    0.79       8.5 +/-    0.79  0.040 / 0.040
G25     219.3          38.6                7.4 +/-    2.55      11.0 +/-    2.55  0.050 / 0.090
G29     345.0          73.5                3.5 +/-    0.73       3.7 +/-    0.73  0.060 / 0.110