PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-02:58:00
G01     319.8          15.7               -0.1 +/-   20.64      -0.3 +/-   20.64  0.120 / 0.300
G08     258.4          14.5                7.9 +/-    1.94      20.0 +/-    1.94  0.250 / 0.360
G10     75.8           54.4                6.0 +/-    0.45       7.2 +/-    0.45  0.160 / 0.390
G11     304.7          22.4                3.7 +/-    1.21       7.8 +/-    1.21  0.140 / 0.290
G14     285.8          69.1                6.4 +/-    0.68       6.8 +/-    0.68  0.040 / 0.070
G18     306.8          38.6                5.0 +/-    1.86       7.4 +/-    1.86  0.040 / 0.070
G20     82.4           59.9               10.8 +/-    0.77      12.3 +/-    0.77  0.070 / 0.260
G27     226.0          10.5                9.4 +/-    4.00      26.0 +/-    4.00  0.070 / 0.240
G31     174.6          41.0                9.0 +/-    1.01      12.9 +/-    1.01  0.170 / 0.230
G32     6.9            68.2                6.5 +/-    0.73       6.9 +/-    0.73  0.180 / 0.310