PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/27-16:12:30
G02     6.1            72.9               13.2 +/-    0.66      13.8 +/-    0.66  0.030 / 0.030
G05     164.3          39.5               16.8 +/-    1.18      24.6 +/-    1.18  0.020 / 0.030
G06     44.1           33.9                9.9 +/-    0.55      16.0 +/-    0.55  0.200 / 0.280
G12     286.9          77.8               11.0 +/-    1.05      11.2 +/-    1.05  0.170 / 0.360
G19     84.0           20.6               14.5 +/-    1.16      31.4 +/-    1.16  0.060 / 0.080
G24     223.5          17.3               15.0 +/-    1.96      35.2 +/-    1.96  0.040 / 0.090
G25     314.3          39.4               11.6 +/-    2.89      17.0 +/-    2.89  0.050 / 0.060
G29     294.4          17.5               10.3 +/-    1.96      24.0 +/-    1.96  0.070 / 0.080