PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/24-17:27:50
G02     83.8           12.9               18.2 +/-    2.29      47.4 +/-    2.29  0.140 / 0.440
G05     44.6           35.2               17.6 +/-    0.77      27.8 +/-    0.77  0.130 / 0.440
G13     101.1          33.5               20.4 +/-    0.89      33.3 +/-    0.89  0.060 / 0.110
G15     144.2          37.9               22.1 +/-    0.81      33.3 +/-    0.81  0.060 / 0.110
G18     231.2          27.9               22.4 +/-    1.70      41.1 +/-    1.70  0.050 / 0.070
G20     335.8          84.4               18.5 +/-    0.39      18.6 +/-    0.39  0.050 / 0.090
G21     298.0          37.9               26.5 +/-    1.21      39.9 +/-    1.21  0.050 / 0.040
G25     207.8          25.1               20.9 +/-    1.04      40.7 +/-    1.04  0.080 / 0.040
G26     309.9          15.5               16.2 +/-    3.66      39.8 +/-    3.66  0.110 / 0.180
G29     96.0           84.4               19.9 +/-    0.38      20.0 +/-    0.38  0.160 / 0.210