PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-21:27:40
G02     69.2           26.0               10.2 +/-    0.86      19.5 +/-    0.86  0.080 / 0.170
G05     48.1           53.8               10.8 +/-    0.37      13.0 +/-    0.37  0.090 / 0.200
G12     182.1          18.7               17.8 +/-    3.08      40.4 +/-    3.08  0.090 / 0.300
G13     118.9          24.0               14.4 +/-    1.93      28.9 +/-    1.93  0.100 / 0.250
G15     157.8          21.9               18.3 +/-    2.27      38.4 +/-    2.27  0.060 / 0.090
G18     222.2          11.5                7.0 +/-   39.50      19.0 +/-   39.50  0.060 / 0.100
G20     218.5          75.9               12.6 +/-    0.77      13.0 +/-    0.77  0.030 / 0.050
G21     281.8          25.6               12.9 +/-    1.18      25.0 +/-    1.18  0.030 / 0.040
G25     216.0          39.2               15.4 +/-    1.06      22.7 +/-    1.06  0.040 / 0.050
G29     340.8          70.2               13.2 +/-    0.53      13.9 +/-    0.53  0.040 / 0.040