PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-20:58:00
G10     265.4          36.5               18.0 +/-    1.05      27.9 +/-    1.05  0.140 / 0.430
G13     43.2           20.8               14.5 +/-    1.87      31.3 +/-    1.87  0.150 / 0.510
G15     60.7           49.6               17.9 +/-    0.76      22.7 +/-    0.76  0.110 / 0.390
G16     284.5          11.5               15.8 +/-    2.08      42.7 +/-    2.08  0.160 / 0.350
G18     298.6          64.2               16.1 +/-    0.82      17.6 +/-    0.82  0.040 / 0.050
G20     53.6           35.8               15.3 +/-    0.97      24.0 +/-    0.97  0.040 / 0.040
G21     5.1            72.0               17.8 +/-    0.33      18.6 +/-    0.33  0.070 / 0.250
G24     122.6          13.1               20.5 +/-    2.07      53.4 +/-    2.07  0.070 / 0.270
G27     318.4          19.2               15.1 +/-    1.34      33.8 +/-    1.34  0.050 / 0.110
G29     165.8          28.0               20.9 +/-    1.65      38.2 +/-    1.65  0.060 / 0.130