PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/07-22:58:10
G10     274.6          41.7               19.2 +/-    1.55      27.1 +/-    1.55  0.110 / 0.270
G15     53.3           43.8               19.5 +/-    1.29      26.7 +/-    1.29  0.130 / 0.390
G18     316.3          66.1               18.4 +/-    0.88      20.0 +/-    0.88  0.040 / 0.040
G20     59.7           29.0               18.0 +/-    1.60      32.3 +/-    1.60  0.040 / 0.050
G21     28.4           75.8               20.5 +/-    0.48      21.1 +/-    0.48  0.110 / 0.340
G24     115.6          18.0               22.6 +/-    1.43      52.3 +/-    1.43  0.140 / 0.320
G27     313.8          25.5               17.6 +/-    1.11      34.0 +/-    1.11  0.070 / 0.160
G29     167.1          20.6               20.2 +/-    2.95      43.8 +/-    2.95  0.060 / 0.140
G32     206.3          13.7               21.8 +/-    2.87      55.9 +/-    2.87  0.080 / 0.120