PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/13-19:43:00
G02     71.7           23.3               12.2 +/-    1.61      24.8 +/-    1.61  0.080 / 0.110
G05     46.9           51.6               14.3 +/-    0.81      17.6 +/-    0.81  0.060 / 0.090
G12     182.0          16.9               19.2 +/-    2.24      45.5 +/-    2.24  0.100 / 0.260
G13     116.9          25.5               17.2 +/-    1.22      33.2 +/-    1.22  0.120 / 0.270
G15     155.4          24.5               19.2 +/-    1.69      38.0 +/-    1.69  0.040 / 0.040
G18     223.3          14.3               15.7 +/-    4.33      39.8 +/-    4.33  0.040 / 0.050
G20     223.3          77.8               15.6 +/-    0.51      15.9 +/-    0.51  0.030 / 0.020
G21     284.3          27.7               14.8 +/-    1.24      27.2 +/-    1.24  0.030 / 0.020
G25     215.5          37.6               16.6 +/-    1.88      25.1 +/-    1.88  0.050 / 0.030
G29     346.2          73.8               15.1 +/-    0.56      15.7 +/-    0.56  0.050 / 0.030