PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/23-21:58:00
G10     246.7          23.5               11.0 +/-    1.61      22.3 +/-    1.61  0.120 / 0.160
G13     57.9           32.1                7.5 +/-    1.08      12.6 +/-    1.08  0.060 / 0.180
G15     103.3          59.1                8.6 +/-    0.72       9.9 +/-    0.72  0.060 / 0.060
G16     298.6          16.2                6.3 +/-    2.35      15.2 +/-    2.35  0.050 / 0.060
G20     250.1          14.0                5.1 +/-    1.15      13.0 +/-    1.15  0.050 / 0.130
G21     326.9          56.1                6.1 +/-    1.13       7.2 +/-    1.13  0.060 / 0.130
G26     270.7          17.5               10.2 +/-    2.23      23.8 +/-    2.23  0.030 / 0.040
G29     163.9          56.6               10.2 +/-    1.29      12.0 +/-    1.29  0.030 / 0.050