PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/20-00:27:50
G03     235.4          67.1                5.9 +/-    0.52       6.4 +/-    0.52  0.130 / 0.290
G09     305.8          23.0                5.3 +/-    0.74      10.9 +/-    0.74  0.110 / 0.360
G14     101.4          12.7                5.7 +/-    2.96      15.1 +/-    2.96  0.040 / 0.040
G16     122.3          60.2                7.0 +/-    0.30       7.9 +/-    0.30  0.050 / 0.040
G22     195.4          53.8                7.0 +/-    0.37       8.4 +/-    0.37  0.030 / 0.040
G23     319.3          48.9                5.8 +/-    0.82       7.4 +/-    0.82  0.040 / 0.030
G26     67.4           51.5                4.5 +/-    0.81       5.6 +/-    0.81  0.030 / 0.030
G31     52.7           19.9                3.5 +/-    4.05       7.7 +/-    4.05  0.030 / 0.030