PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/16-19:27:50
G02     70.8           24.0               14.6 +/-    1.67      29.2 +/-    1.67  0.080 / 0.090
G05     47.4           52.6               15.3 +/-    0.70      18.7 +/-    0.70  0.060 / 0.090
G12     182.4          18.2               17.9 +/-    2.48      41.3 +/-    2.48  0.110 / 0.210
G13     118.0          24.7               19.9 +/-    1.83      39.1 +/-    1.83  0.080 / 0.170
G15     156.1          23.5               19.1 +/-    2.19      38.6 +/-    2.19  0.090 / 0.110
G18     222.7          13.3               17.0 +/-    5.42      43.9 +/-    5.42  0.080 / 0.170
G20     221.0          76.4               15.9 +/-    0.71      16.3 +/-    0.71  0.030 / 0.040
G21     283.3          27.1               14.2 +/-    0.78      26.5 +/-    0.78  0.030 / 0.040
G25     216.6          38.7               16.7 +/-    1.72      24.8 +/-    1.72  0.030 / 0.030
G29     344.9          72.7               16.4 +/-    0.43      17.1 +/-    0.43  0.030 / 0.020