PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-00:12:30
G03     229.3          65.4                6.2 +/-    1.12       6.7 +/-    1.12  0.050 / 0.040
G09     305.7          21.0                4.4 +/-    2.05       9.5 +/-    2.05  0.040 / 0.040
G14     103.3          11.3                5.6 +/-    2.36      15.2 +/-    2.36  0.240 / 0.280
G16     127.6          61.6                8.0 +/-    0.32       8.9 +/-    0.32  0.230 / 0.220
G22     193.3          51.8                7.5 +/-    0.62       9.3 +/-    0.62  0.030 / 0.030
G23     321.9          51.7                5.4 +/-    1.07       6.7 +/-    1.07  0.030 / 0.030
G26     65.4           51.3                4.7 +/-    1.04       5.9 +/-    1.04  0.110 / 0.300
G31     53.7           18.5                3.6 +/-    2.53       8.1 +/-    2.53  0.150 / 0.350