PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-21:12:50
G02     72.7           23.1               10.1 +/-    1.48      20.6 +/-    1.48  0.100 / 0.240
G05     46.2           50.1               12.7 +/-    1.06      16.0 +/-    1.06  0.130 / 0.270
G12     181.3          14.8               22.5 +/-    2.10      56.2 +/-    2.10  0.070 / 0.100
G13     115.0          26.7               16.7 +/-    1.04      31.3 +/-    1.04  0.080 / 0.100
G15     155.1          25.7               20.1 +/-    1.10      38.7 +/-    1.10  0.030 / 0.050
G18     224.1          15.4               23.7 +/-    3.87      58.5 +/-    3.87  0.030 / 0.060
G20     227.5          80.3               14.6 +/-    0.90      14.8 +/-    0.90  0.030 / 0.040
G21     285.5          28.2               12.4 +/-    1.41      22.6 +/-    1.41  0.030 / 0.050
G25     213.2          35.4               17.4 +/-    1.04      27.4 +/-    1.04  0.080 / 0.190
G29     346.3          74.9               14.1 +/-    0.66      14.5 +/-    0.66  0.080 / 0.140