PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-21:43:10
G02     59.9           33.7                9.3 +/-    0.76      15.2 +/-    0.76  0.050 / 0.100
G05     58.7           63.4               11.0 +/-    0.76      12.1 +/-    0.76  0.040 / 0.090
G12     184.1          29.4               12.8 +/-    0.74      22.7 +/-    0.74  0.050 / 0.050
G13     128.1          16.6               14.9 +/-    1.62      35.6 +/-    1.62  0.040 / 0.040
G15     164.1          12.6               16.7 +/-    1.94      44.1 +/-    1.94  0.160 / 0.300
G20     207.9          63.9               13.7 +/-    0.56      15.1 +/-    0.56  0.090 / 0.270
G21     272.7          18.7                9.9 +/-    1.98      22.5 +/-    1.98  0.050 / 0.070
G25     225.9          48.9               13.7 +/-    0.94      17.6 +/-    0.94  0.050 / 0.070
G29     331.4          58.7               10.4 +/-    0.83      11.9 +/-    0.83  0.030 / 0.040