PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/05-23:57:40
G01     221.0          11.7                7.7 +/-    0.98      20.7 +/-    0.98  0.030 / 0.040
G03     265.1          69.7                7.0 +/-    0.53       7.4 +/-    0.53  0.040 / 0.030
G09     298.6          12.3                2.8 +/-   20.61       7.4 +/-   20.61  0.040 / 0.060
G14     93.6           19.0                6.3 +/-    2.45      14.3 +/-    2.45  0.040 / 0.050
G16     145.7          50.7                9.7 +/-    0.65      12.1 +/-    0.65  0.080 / 0.100
G22     204.3          64.3                8.0 +/-    0.96       8.7 +/-    0.96  0.050 / 0.160
G23     312.5          42.0                6.8 +/-    1.13       9.6 +/-    1.13  0.310 / 0.290
G26     86.7           55.6                7.5 +/-    1.23       8.9 +/-    1.23  0.370 / 0.250
G31     47.6           28.1                4.6 +/-    2.29       8.5 +/-    2.29  0.210 / 0.310