PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/13-01:57:30
G03     232.9          66.0                3.8 +/-    0.69       4.1 +/-    0.69  0.060 / 0.050
G09     305.6          21.2                1.9 +/-    1.66       4.0 +/-    1.66  0.050 / 0.050
G14     103.0          11.3                4.1 +/-    2.96      11.1 +/-    2.96  0.030 / 0.040
G16     133.3          60.6                6.4 +/-    0.84       7.2 +/-    0.84  0.030 / 0.040
G22     194.0          52.6                5.5 +/-    1.32       6.7 +/-    1.32  0.210 / 0.260
G23     321.0          50.7                3.5 +/-    0.97       4.3 +/-    0.97  0.260 / 0.290
G26     67.8           52.7                2.8 +/-    0.51       3.4 +/-    0.51  0.120 / 0.390
G31     52.9           20.2                2.3 +/-    4.10       5.0 +/-    4.10  0.140 / 0.410