PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/19-14:58:10
G01     47.1           22.8                5.6 +/-    2.18      11.5 +/-    2.18  0.110 / 0.230
G06     177.1          28.9               10.3 +/-    1.88      18.5 +/-    1.88  0.120 / 0.210
G11     43.3           9.4                 5.3 +/-    2.35      15.0 +/-    2.35  0.050 / 0.060
G13     248.8          28.2                7.8 +/-    2.23      14.2 +/-    2.23  0.060 / 0.060
G15     282.5          14.8                6.6 +/-    1.05      16.5 +/-    1.05  0.080 / 0.200
G17     344.9          76.2                8.2 +/-    0.76       8.4 +/-    0.76  0.080 / 0.160
G19     256.2          65.1                8.6 +/-    0.41       9.3 +/-    0.41  0.100 / 0.220
G28     58.6           51.1                7.1 +/-    0.77       8.8 +/-    0.77  0.080 / 0.130
G30     151.5          39.4                8.9 +/-    1.06      13.0 +/-    1.06  0.030 / 0.030