PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/17-00:12:50
G10     266.6          37.2               11.7 +/-    1.27      17.8 +/-    1.27  0.180 / 0.430
G13     42.6           19.9                9.1 +/-    1.94      20.2 +/-    1.94  0.190 / 0.360
G15     60.7           50.3               10.3 +/-    0.84      13.0 +/-    0.84  0.090 / 0.060
G16     281.4          11.5               11.5 +/-    1.34      31.0 +/-    1.34  0.080 / 0.070
G18     298.7          63.8               10.5 +/-    0.68      11.6 +/-    0.68  0.040 / 0.030
G20     55.0           33.8                8.9 +/-    2.07      14.5 +/-    2.07  0.040 / 0.030
G21     3.2            72.0               10.1 +/-    0.90      10.5 +/-    0.90  0.170 / 0.280
G24     121.6          13.8               14.4 +/-    2.08      37.0 +/-    2.08  0.220 / 0.250
G27     317.8          20.2                9.2 +/-    1.80      20.2 +/-    1.80  0.110 / 0.120
G29     167.0          28.7               13.8 +/-    1.81      24.9 +/-    1.81  0.120 / 0.110