PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/20-00:58:00
G01     222.6          13.4                6.5 +/-    3.56      16.9 +/-    3.56  0.030 / 0.030
G03     274.3          69.0                5.5 +/-    0.82       5.8 +/-    0.82  0.030 / 0.030
G09     297.2          11.0              -10.9 +/-   21.53     -29.7 +/-   21.53  0.170 / 0.560
G14     91.6           20.3                5.7 +/-    2.10      12.4 +/-    2.10  0.150 / 0.360
G16     149.4          47.8                7.7 +/-    0.76      10.0 +/-    0.76  0.070 / 0.080
G22     208.3          66.7                5.6 +/-    0.46       6.0 +/-    0.46  0.050 / 0.070
G23     310.5          40.0                4.7 +/-    0.87       6.9 +/-    0.87  0.030 / 0.050
G26     92.9           56.0                4.8 +/-    0.95       5.6 +/-    0.95  0.040 / 0.050
G31     46.2           30.9                2.9 +/-    0.98       5.0 +/-    0.98  0.150 / 0.210