PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-18:13:10
G10     273.3          41.1               10.4 +/-    1.17      14.9 +/-    1.17  0.140 / 0.150
G13     40.0           14.9               10.2 +/-    2.56      25.5 +/-    2.56  0.160 / 0.100
G15     53.3           43.1               10.7 +/-    0.94      14.9 +/-    0.94  0.070 / 0.110
G18     317.5          66.6               10.1 +/-    0.34      10.9 +/-    0.34  0.060 / 0.090
G20     57.9           31.8                8.9 +/-    1.65      15.1 +/-    1.65  0.110 / 0.170
G24     116.5          17.4               15.0 +/-    0.97      35.2 +/-    0.97  0.130 / 0.140
G27     314.7          24.5                7.9 +/-    1.83      15.6 +/-    1.83  0.300 / 0.380
G29     166.0          19.9               13.8 +/-    2.32      30.5 +/-    2.32  0.310 / 0.450
G32     205.9          13.0               14.6 +/-    2.72      38.1 +/-    2.72  0.210 / 0.340