PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-22:42:50
G05     47.0           24.1               10.4 +/-    0.49      20.7 +/-    0.49  0.110 / 0.250
G13     82.6           37.4               13.3 +/-    0.63      20.1 +/-    0.63  0.110 / 0.290
G15     132.0          49.1               15.6 +/-    0.94      19.9 +/-    0.94  0.150 / 0.370
G18     241.8          38.4               14.7 +/-    0.85      21.9 +/-    0.85  0.190 / 0.450
G20     25.9           69.1               13.0 +/-    0.76      13.8 +/-    0.76  0.040 / 0.090
G21     309.4          44.9               12.1 +/-    0.86      16.3 +/-    0.86  0.040 / 0.090
G25     197.8          11.3               18.4 +/-    2.39      50.0 +/-    2.39  0.080 / 0.100
G26     293.6          19.8               13.0 +/-    2.87      28.7 +/-    2.87  0.070 / 0.110
G29     150.9          73.7               14.5 +/-    0.29      15.1 +/-    0.29  0.030 / 0.040