PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/08-21:57:40
G10     249.4          24.8               10.7 +/-    1.10      21.0 +/-    1.10  0.130 / 0.140
G13     56.1           32.2               10.0 +/-    1.19      16.8 +/-    1.19  0.130 / 0.170
G15     90.4           57.8               12.3 +/-    1.43      14.2 +/-    1.43  0.150 / 0.250
G16     300.0          14.1                6.9 +/-    1.75      17.6 +/-    1.75  0.090 / 0.240
G18     267.0          55.0                7.7 +/-    2.53       9.1 +/-    2.53  0.040 / 0.040
G20     42.2           49.2               10.3 +/-    1.02      13.2 +/-    1.02  0.050 / 0.040
G21     333.1          60.1                9.9 +/-    0.38      11.3 +/-    0.38  0.060 / 0.120
G26     272.3          15.8                9.7 +/-    1.32      23.8 +/-    1.32  0.090 / 0.120
G29     162.8          47.6               12.0 +/-    0.42      15.6 +/-    0.42  0.050 / 0.070