PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/22-22:57:50
G08     292.8          23.5                6.6 +/-    1.35      13.3 +/-    1.35  0.060 / 0.120
G10     6.3            62.9                6.1 +/-    0.57       6.8 +/-    0.57  0.060 / 0.100
G14     229.0          45.0               11.4 +/-    0.96      15.3 +/-    0.96  0.060 / 0.090
G20     64.1           52.7                6.9 +/-    0.86       8.4 +/-    0.86  0.050 / 0.110
G21     146.1          41.1               10.0 +/-    0.66      14.3 +/-    0.66  0.070 / 0.090
G24     54.7           24.1                6.5 +/-    0.80      13.0 +/-    0.80  0.070 / 0.080
G27     256.6          32.1                8.5 +/-    1.93      14.2 +/-    1.93  0.090 / 0.180
G32     245.1          68.2                8.8 +/-    1.20       9.4 +/-    1.20  0.100 / 0.190