PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/07-20:12:40
G10     254.7          29.2               21.4 +/-    1.43      38.1 +/-    1.43  0.040 / 0.050
G13     50.5           28.5               17.0 +/-    0.99      30.8 +/-    0.99  0.040 / 0.050
G15     76.8           55.8               21.4 +/-    0.90      25.2 +/-    0.90  0.090 / 0.390
G16     295.3          13.5               20.2 +/-    0.99      52.2 +/-    0.99  0.080 / 0.320
G18     277.5          59.3               22.9 +/-    1.32      26.2 +/-    1.32  0.080 / 0.250
G20     45.8           44.8               19.7 +/-    0.82      26.7 +/-    0.82  0.100 / 0.290
G21     343.6          65.0               20.8 +/-    0.89      22.7 +/-    0.89  0.090 / 0.180
G26     267.9          13.3               20.5 +/-    1.37      52.9 +/-    1.37  0.080 / 0.170
G27     322.0          10.3              -14.9 +/-   22.94     -41.2 +/-   22.94  0.050 / 0.080
G29     163.7          39.5               24.4 +/-    0.55      35.8 +/-    0.55  0.050 / 0.070