PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/14-16:12:30
G02     249.0          77.1               10.8 +/-    0.43      11.1 +/-    0.43  0.050 / 0.050
G05     174.0          16.0               18.3 +/-    1.29      44.4 +/-    1.29  0.040 / 0.050
G06     40.1           56.1               10.7 +/-    0.94      12.7 +/-    0.94  0.110 / 0.220
G12     321.4          55.1                8.4 +/-    1.17      10.0 +/-    1.17  0.090 / 0.220
G17     75.3           18.1               10.4 +/-    1.12      23.9 +/-    1.12  0.120 / 0.200
G19     62.2           34.9               10.0 +/-    1.20      15.9 +/-    1.20  0.100 / 0.200
G24     243.8          33.3               12.9 +/-    1.13      21.2 +/-    1.13  0.030 / 0.040
G25     317.4          18.2               10.0 +/-    1.31      23.0 +/-    1.31  0.030 / 0.030