PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/31-01:28:10
G01     240.6          29.2                7.5 +/-    1.47      13.4 +/-    1.47  0.040 / 0.040
G03     312.4          51.8                5.0 +/-    1.46       6.2 +/-    1.46  0.040 / 0.040
G14     71.2           33.9                4.2 +/-    0.77       6.8 +/-    0.77  0.080 / 0.140
G16     162.8          24.7                7.7 +/-    2.19      15.2 +/-    2.19  0.090 / 0.140
G22     285.4          72.9                6.0 +/-    0.70       6.2 +/-    0.70  0.080 / 0.270
G23     293.5          24.3                6.6 +/-    1.22      13.0 +/-    1.22  0.070 / 0.240
G26     131.7          44.8                8.7 +/-    0.97      11.7 +/-    0.97  0.030 / 0.050
G31     39.0           53.0                4.0 +/-    0.43       4.9 +/-    0.43  0.030 / 0.050
G32     84.7           18.8                4.8 +/-    0.72      10.9 +/-    0.72  0.070 / 0.130