PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/12-16:57:40
G02     341.6          78.6                9.6 +/-    1.01       9.8 +/-    1.01  0.030 / 0.050
G05     168.2          31.5               13.6 +/-    1.31      23.1 +/-    1.31  0.030 / 0.040
G06     41.9           40.0                7.8 +/-    0.33      11.4 +/-    0.33  0.090 / 0.110
G12     309.0          72.2                9.3 +/-    0.43       9.7 +/-    0.43  0.080 / 0.120
G19     77.6           24.9               10.2 +/-    0.98      20.0 +/-    0.98  0.050 / 0.110
G24     229.0          22.4               12.8 +/-    2.56      26.6 +/-    2.56  0.040 / 0.110
G25     316.7          33.3               10.1 +/-    2.44      16.5 +/-    2.44  0.040 / 0.060
G29     288.5          12.3               11.0 +/-    2.77      29.0 +/-    2.77  0.040 / 0.060