PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/25-02:57:50
G01     320.7          11.4              -18.6 +/-   11.85     -50.4 +/-   11.85  0.150 / 0.300
G08     263.0          17.0                8.5 +/-    0.93      20.2 +/-    0.93  0.230 / 0.310
G10     64.9           58.1                6.1 +/-    0.67       7.1 +/-    0.67  0.210 / 0.000
G11     308.2          20.6                5.7 +/-    2.08      12.5 +/-    2.08  0.020 / 0.020
G14     277.2          69.1                5.7 +/-    0.66       6.0 +/-    0.66  0.020 / 0.020
G18     93.9           35.4                5.5 +/-    1.26       8.6 +/-    1.26  0.170 / 0.560
G21     154.5          12.2                4.3 +/-    2.75      11.4 +/-    2.75  0.160 / 0.570
G27     228.4          13.6                8.2 +/-    2.52      21.2 +/-    2.52  0.040 / 0.050
G31     178.5          32.4                6.4 +/-    1.35      10.6 +/-    1.35  0.030 / 0.040
G32     340.9          73.1                6.4 +/-    0.58       6.6 +/-    0.58  0.150 / 0.170