PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-04:57:40
G01     312.6          28.2                7.1 +/-    1.16      12.9 +/-    1.16  0.040 / 0.050
G10     96.9           46.4                6.2 +/-    0.39       8.2 +/-    0.39  0.030 / 0.050
G11     288.0          29.1                6.2 +/-    1.61      11.0 +/-    1.61  0.030 / 0.050
G14     342.9          69.6                6.5 +/-    0.78       6.9 +/-    0.78  0.040 / 0.050
G18     111.5          21.4                6.3 +/-    0.58      13.4 +/-    0.58  0.100 / 0.140
G22     306.6          20.5                6.8 +/-    2.96      14.8 +/-    2.96  0.100 / 0.170
G25     84.7           13.6                6.7 +/-    1.39      17.3 +/-    1.39  0.120 / 0.250
G31     172.3          56.2                8.7 +/-    1.13      10.2 +/-    1.13  0.080 / 0.240
G32     25.5           58.9                5.6 +/-    0.43       6.5 +/-    0.43  0.080 / 0.170