PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/24-15:42:40
G02     273.5          80.5               10.1 +/-    0.71      10.2 +/-    0.71  0.080 / 0.150
G05     171.9          20.8               12.7 +/-    1.45      27.5 +/-    1.45  0.070 / 0.160
G06     39.8           51.6                9.1 +/-    0.33      11.3 +/-    0.33  0.020 / 0.040
G12     320.2          60.0                9.8 +/-    0.53      11.2 +/-    0.53  0.030 / 0.040
G17     79.2           15.3                8.8 +/-    0.89      21.7 +/-    0.89  0.080 / 0.210
G19     66.8           31.9               10.3 +/-    1.15      17.3 +/-    1.15  0.090 / 0.180
G24     239.0          30.2               12.1 +/-    1.81      21.0 +/-    1.81  0.030 / 0.050
G25     317.7          22.1                7.5 +/-    1.99      15.6 +/-    1.99  0.040 / 0.040