PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/23-20:42:50
G02     62.0           31.6               11.2 +/-    0.98      18.9 +/-    0.98  0.080 / 0.110
G05     56.7           62.7               14.3 +/-    0.44      15.9 +/-    0.44  0.060 / 0.090
G12     184.1          27.8               19.4 +/-    1.15      35.6 +/-    1.15  0.080 / 0.080
G13     126.7          17.9               20.6 +/-    2.01      47.7 +/-    2.01  0.090 / 0.100
G15     162.5          14.5               25.5 +/-    2.42      64.1 +/-    2.42  0.050 / 0.030
G20     209.5          65.7               17.9 +/-    0.53      19.4 +/-    0.53  0.050 / 0.030
G21     274.4          20.2               18.0 +/-    1.77      39.3 +/-    1.77  0.050 / 0.040
G25     224.8          47.5               18.3 +/-    2.56      23.8 +/-    2.56  0.050 / 0.030
G29     333.5          61.3               13.6 +/-    0.41      15.3 +/-    0.41  0.050 / 0.030