PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/01-17:58:00
G02     230.2          69.4                7.9 +/-    0.99       8.4 +/-    0.99  0.120 / 0.280
G05     173.8          12.0               11.1 +/-    1.68      29.5 +/-    1.68  0.120 / 0.270
G06     42.5           61.0                9.3 +/-    0.43      10.5 +/-    0.43  0.030 / 0.060
G12     322.5          51.4                7.9 +/-    1.47       9.8 +/-    1.47  0.040 / 0.060
G17     67.5           24.5                9.6 +/-    1.17      19.0 +/-    1.17  0.030 / 0.040
G19     49.4           44.2                8.4 +/-    0.52      11.5 +/-    0.52  0.040 / 0.050
G24     248.6          37.2               11.7 +/-    1.70      17.8 +/-    1.70  0.060 / 0.090