PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/09-21:13:00
G05     48.1           21.4               11.2 +/-    0.59      23.8 +/-    0.59  0.120 / 0.260
G10     236.2          11.4               13.1 +/-   29.82      35.6 +/-   29.82  0.110 / 0.270
G13     78.0           37.6               13.7 +/-    0.43      20.8 +/-    0.43  0.080 / 0.080
G15     125.3          51.9               15.0 +/-    0.32      18.5 +/-    0.32  0.090 / 0.080
G16     316.8          10.5                0.9 +/-   22.67       2.5 +/-   22.67  0.150 / 0.590
G18     245.3          41.9               13.6 +/-    1.96      19.1 +/-    1.96  0.150 / 0.570
G20     28.4           66.0               13.3 +/-    0.30      14.4 +/-    0.30  0.070 / 0.170
G21     313.5          47.8               12.8 +/-    0.82      16.6 +/-    0.82  0.060 / 0.140
G26     290.8          19.4               12.8 +/-    0.94      28.7 +/-    0.94  0.030 / 0.050
G29     153.6          68.4               13.8 +/-    1.17      14.7 +/-    1.17  0.040 / 0.050