PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/05-20:27:50
G02     75.9           20.2               16.8 +/-    1.52      36.8 +/-    1.52  0.180 / 0.190
G05     45.1           46.8               18.3 +/-    0.71      24.1 +/-    0.71  0.130 / 0.180
G12     180.6          11.8               29.9 +/-    4.16      80.2 +/-    4.16  0.300 / 0.370
G13     111.6          28.8               21.7 +/-    1.66      39.0 +/-    1.66  0.190 / 0.330
G15     152.3          29.1               22.5 +/-    0.53      40.1 +/-    0.53  0.190 / 0.130
G18     225.8          18.9               28.5 +/-    4.45      64.4 +/-    4.45  0.110 / 0.130
G20     243.0          83.5               20.5 +/-    0.52      20.6 +/-    0.52  0.040 / 0.040
G21     288.8          30.8               22.5 +/-    2.43      38.9 +/-    2.43  0.030 / 0.040
G25     211.4          32.4               22.1 +/-    2.89      36.8 +/-    2.89  0.030 / 0.030
G29     354.8          79.2               19.7 +/-    0.51      20.0 +/-    0.51  0.030 / 0.030