PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/18-23:43:00
G10     256.9          30.7               13.3 +/-    1.62      23.0 +/-    1.62  0.110 / 0.330
G13     48.6           27.0               10.6 +/-    1.08      19.8 +/-    1.08  0.140 / 0.360
G15     75.0           56.0               13.1 +/-    1.16      15.5 +/-    1.16  0.050 / 0.040
G16     290.8          13.8                9.6 +/-    2.41      24.5 +/-    2.41  0.040 / 0.030
G18     280.0          59.5               11.2 +/-    1.68      12.7 +/-    1.68  0.160 / 0.250
G20     48.3           41.5                9.3 +/-    1.48      13.3 +/-    1.48  0.200 / 0.260
G21     344.0          65.6               12.2 +/-    0.82      13.2 +/-    0.82  0.070 / 0.140
G26     263.5          12.5               13.3 +/-    2.31      35.2 +/-    2.31  0.080 / 0.120
G27     321.4          12.4                4.9 +/-   16.82      13.0 +/-   16.82  0.040 / 0.050
G29     165.5          39.1               15.3 +/-    1.02      22.6 +/-    1.02  0.050 / 0.060