PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-20:13:10
G02     33.3           55.6               11.1 +/-    1.03      13.1 +/-    1.03  0.050 / 0.050
G05     143.8          63.0               13.8 +/-    0.42      15.3 +/-    0.42  0.050 / 0.060
G06     55.7           13.6                8.6 +/-    2.93      22.0 +/-    2.93  0.040 / 0.040
G12     195.0          63.8               10.6 +/-    0.48      11.6 +/-    0.48  0.020 / 0.040
G20     198.2          30.4               12.0 +/-    2.37      20.8 +/-    2.37  0.060 / 0.050
G25     285.8          58.9               11.3 +/-    2.95      13.0 +/-    2.95  0.040 / 0.040
G29     310.5          32.1                9.2 +/-    1.47      15.5 +/-    1.47  0.060 / 0.100