PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/26-09:12:30
G02     46.1           43.7                3.2 +/-    1.96       4.3 +/-    1.96  0.040 / 0.030
G05     103.9          69.0                4.9 +/-    0.82       5.2 +/-    0.82  0.030 / 0.020
G06     60.4           9.7                 2.4 +/-    2.17       6.7 +/-    2.17  0.040 / 0.030
G12     192.1          54.6                7.1 +/-    0.60       8.5 +/-    0.60  0.040 / 0.040
G20     202.7          35.4                7.1 +/-    0.98      11.1 +/-    0.98  0.040 / 0.050
G25     274.0          58.0               10.6 +/-    0.97      12.3 +/-    0.97  0.040 / 0.040
G29     317.4          40.0                2.9 +/-    0.66       4.2 +/-    0.66  0.090 / 0.100