PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-19:57:20
G02     33.7           55.3               13.4 +/-    0.85      15.9 +/-    0.85  0.030 / 0.050
G05     144.1          63.1               15.2 +/-    0.41      16.8 +/-    0.41  0.040 / 0.040
G06     55.8           13.6               10.6 +/-    0.92      27.3 +/-    0.92  0.040 / 0.060
G12     195.1          63.7               13.6 +/-    0.69      15.0 +/-    0.69  0.040 / 0.050
G20     198.2          30.5               15.8 +/-    1.40      27.5 +/-    1.40  0.030 / 0.040
G25     285.8          58.8               13.6 +/-    1.36      15.6 +/-    1.36  0.030 / 0.040
G29     310.7          32.4               12.3 +/-    1.02      20.5 +/-    1.02  0.070 / 0.100