PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/01-00:43:10
G03     231.8          66.0                6.6 +/-    0.76       7.1 +/-    0.76  0.040 / 0.050
G09     305.4          20.6                4.6 +/-    1.75       9.9 +/-    1.75  0.040 / 0.040
G14     102.8          11.7                6.5 +/-    1.43      17.5 +/-    1.43  0.100 / 0.290
G16     130.2          60.9                9.0 +/-    0.49      10.2 +/-    0.49  0.160 / 0.340
G22     193.9          52.7                7.9 +/-    1.15       9.6 +/-    1.15  0.030 / 0.030
G23     321.1          50.9                5.9 +/-    1.13       7.4 +/-    1.13  0.030 / 0.040
G26     67.0           52.1                5.5 +/-    0.58       6.7 +/-    0.58  0.220 / 0.320
G31     53.2           19.4                3.3 +/-    4.07       7.3 +/-    4.07  0.340 / 0.420