PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/27-01:13:10
G10     255.6          29.8               10.3 +/-    2.25      18.1 +/-    2.25  0.110 / 0.260
G13     49.5           27.7                6.8 +/-    1.69      12.5 +/-    1.69  0.150 / 0.300
G15     79.1           57.4                6.0 +/-    3.12       7.0 +/-    3.12  0.070 / 0.110
G16     291.4          14.2                6.3 +/-    1.49      16.1 +/-    1.49  0.100 / 0.130
G18     276.7          58.1              -50.6 +/-   64.95     -58.4 +/-   64.95  0.040 / 0.070
G20     47.6           42.2                9.5 +/-    2.39      13.4 +/-    2.39  0.040 / 0.060
G21     340.9          64.3                9.6 +/-    2.56      10.5 +/-    2.56  0.130 / 0.390
G26     264.0          13.1                9.1 +/-    1.00      23.7 +/-    1.00  0.170 / 0.330
G27     321.7          11.2               -7.0 +/-   32.21     -18.9 +/-   32.21  0.030 / 0.050
G29     165.6          41.4                9.3 +/-    1.31      13.2 +/-    1.31  0.030 / 0.040