PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/04-00:27:50
G03     235.6          67.0                7.0 +/-    0.88       7.5 +/-    0.88  0.050 / 0.040
G09     304.4          19.3                4.3 +/-    2.74       9.7 +/-    2.74  0.070 / 0.050
G14     101.5          12.8                6.6 +/-    1.57      17.2 +/-    1.57  0.030 / 0.040
G16     132.8          59.6                9.8 +/-    0.50      11.2 +/-    0.50  0.030 / 0.050
G22     194.9          54.4                8.1 +/-    0.63       9.7 +/-    0.63  0.180 / 0.180
G23     319.9          49.6                6.6 +/-    0.91       8.3 +/-    0.91  0.320 / 0.260
G26     69.3           52.8                5.5 +/-    0.55       6.8 +/-    0.55  0.100 / 0.150
G31     52.3           20.5                4.4 +/-    3.16       9.5 +/-    3.16  0.100 / 0.270