PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/17-06:43:00
G08     320.6          10.7              -11.2 +/-   28.89     -30.9 +/-   28.89  0.240 / 0.530
G10     309.6          55.3                5.9 +/-    0.53       7.0 +/-    0.53  0.220 / 0.510
G14     213.4          14.8               10.6 +/-    3.24      26.6 +/-    3.24  0.060 / 0.090
G15     45.6           21.2                3.2 +/-    0.73       6.9 +/-    0.73  0.050 / 0.090
G20     48.6           52.6                4.9 +/-    0.48       6.0 +/-    0.48  0.050 / 0.040
G21     116.5          68.8                7.2 +/-    0.96       7.7 +/-    0.96  0.040 / 0.040
G24     88.3           28.9                6.5 +/-    0.70      11.7 +/-    0.70  0.030 / 0.040
G27     290.6          37.0                7.7 +/-    1.42      11.8 +/-    1.42  0.030 / 0.040
G32     214.3          41.7               10.1 +/-    0.84      14.3 +/-    0.84  0.070 / 0.100