PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-00:12:40
G10     257.5          31.1               12.9 +/-    1.79      22.0 +/-    1.79  0.180 / 0.360
G13     48.1           26.5               10.4 +/-    1.32      19.5 +/-    1.32  0.160 / 0.390
G15     74.3           56.0               11.3 +/-    0.49      13.3 +/-    0.49  0.210 / 0.290
G16     290.0          13.7                9.7 +/-    2.62      25.0 +/-    2.62  0.210 / 0.260
G18     280.7          59.6               11.4 +/-    1.99      13.0 +/-    1.99  0.060 / 0.150
G20     48.8           40.9                9.3 +/-    1.59      13.3 +/-    1.59  0.080 / 0.090
G21     344.6          65.9               10.8 +/-    1.22      11.8 +/-    1.22  0.040 / 0.030
G26     262.7          12.2               14.0 +/-    2.24      37.3 +/-    2.24  0.040 / 0.030
G27     321.2          12.9                7.3 +/-    4.10      19.1 +/-    4.10  0.140 / 0.230
G29     165.7          38.7               13.8 +/-    1.08      20.5 +/-    1.08  0.140 / 0.260