PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/08-20:12:50
G10     256.4          30.4               20.1 +/-    2.10      34.9 +/-    2.10  0.100 / 0.270
G13     49.0           27.3               14.5 +/-    1.41      26.9 +/-    1.41  0.090 / 0.340
G15     73.5           55.0               18.3 +/-    0.55      21.8 +/-    0.55  0.130 / 0.320
G16     293.6          13.3               15.9 +/-    1.94      41.2 +/-    1.94  0.200 / 0.410
G18     280.7          60.2               19.0 +/-    0.95      21.6 +/-    0.95  0.040 / 0.050
G20     47.1           43.3               17.3 +/-    0.66      24.0 +/-    0.66  0.040 / 0.050
G21     346.6          66.3               16.7 +/-    0.94      18.0 +/-    0.94  0.130 / 0.300
G26     266.3          12.6               17.4 +/-    1.60      45.9 +/-    1.60  0.130 / 0.330
G27     321.6          11.8               10.6 +/-   25.75      28.5 +/-   25.75  0.070 / 0.200
G29     164.1          37.4               20.6 +/-    1.03      31.3 +/-    1.03  0.080 / 0.200