PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/12-02:58:00
G08     287.4          23.5                7.5 +/-    1.49      15.1 +/-    1.49  0.040 / 0.030
G10     13.7           63.3                8.6 +/-    0.80       9.5 +/-    0.80  0.030 / 0.030
G14     234.3          51.7               10.7 +/-    2.67      13.2 +/-    2.67  0.220 / 0.160
G18     67.0           50.2                6.5 +/-    1.15       8.2 +/-    1.15  0.200 / 0.160
G21     147.8          36.2                7.4 +/-    0.85      11.5 +/-    0.85  0.030 / 0.020
G24     53.8           24.9                5.7 +/-    3.73      11.1 +/-    3.73  0.030 / 0.020
G27     248.6          29.2                8.4 +/-    1.20      14.9 +/-    1.20  0.070 / 0.070
G32     253.7          69.4                7.1 +/-    0.76       7.5 +/-    0.76  0.050 / 0.090