PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/15-21:43:00
G02     71.5           24.2                9.7 +/-    0.76      19.3 +/-    0.76  0.060 / 0.120
G05     46.6           50.7               10.3 +/-    0.81      12.8 +/-    0.81  0.080 / 0.130
G12     181.4          15.7               15.2 +/-    1.56      37.1 +/-    1.56  0.070 / 0.190
G13     116.1          25.9               13.5 +/-    1.21      25.7 +/-    1.21  0.110 / 0.200
G15     156.1          24.4               15.0 +/-    0.98      29.8 +/-    0.98  0.150 / 0.140
G18     223.5          14.1               16.1 +/-    2.34      40.8 +/-    2.34  0.160 / 0.250
G20     224.2          79.2               13.0 +/-    0.71      13.2 +/-    0.71  0.020 / 0.040
G21     284.3          27.3               11.5 +/-    1.68      21.3 +/-    1.68  0.030 / 0.040
G25     213.6          36.4               13.7 +/-    1.93      21.2 +/-    1.93  0.030 / 0.050
G29     343.9          73.3               13.2 +/-    0.63      13.7 +/-    0.63  0.030 / 0.060