PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-19:43:00
G02     315.5          80.5                8.6 +/-    0.47       8.7 +/-    0.47  0.080 / 0.120
G05     165.8          30.1               12.3 +/-    1.54      21.6 +/-    1.54  0.070 / 0.110
G06     41.2           41.8                8.4 +/-    0.94      11.9 +/-    0.94  0.190 / 0.250
G12     315.4          71.2                7.7 +/-    0.67       8.1 +/-    0.67  0.230 / 0.290
G17     83.3           13.5               10.7 +/-    1.91      27.7 +/-    1.91  0.110 / 0.200
G19     70.0           31.8               10.2 +/-    0.97      17.2 +/-    0.97  0.110 / 0.160
G24     229.9          24.8               10.6 +/-    2.46      20.8 +/-    2.46  0.030 / 0.040
G25     317.6          25.9                8.6 +/-    1.19      16.5 +/-    1.19  0.050 / 0.040