PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/20-04:27:50
G01     304.2          35.0                5.6 +/-    1.18       8.9 +/-    1.18  0.070 / 0.100
G10     108.7          39.0                5.4 +/-    0.61       8.0 +/-    0.61  0.060 / 0.090
G11     276.2          29.5                5.7 +/-    1.97      10.0 +/-    1.97  0.030 / 0.030
G14     7.1            64.7                5.4 +/-    0.66       5.9 +/-    0.66  0.030 / 0.030
G18     118.8          13.3                5.4 +/-    1.26      14.0 +/-    1.26  0.070 / 0.100
G22     310.6          28.4                3.4 +/-    1.28       6.2 +/-    1.28  0.080 / 0.100
G25     74.9           16.5                5.4 +/-    1.86      13.0 +/-    1.86  0.090 / 0.170
G31     165.7          67.6                6.5 +/-    0.38       7.0 +/-    0.38  0.060 / 0.140
G32     37.4           51.7                5.2 +/-    1.30       6.4 +/-    1.30  0.030 / 0.050