PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/25-18:57:40
G01     318.2          19.7               10.2 +/-    1.36      22.7 +/-    1.36  0.250 / 0.300
G08     255.9          12.0               10.1 +/-    5.36      26.9 +/-    5.36  0.280 / 0.400
G10     82.8           52.5               12.1 +/-    1.28      14.9 +/-    1.28  0.280 / 0.340
G11     301.9          23.6                9.8 +/-    1.79      19.8 +/-    1.79  0.050 / 0.050
G14     304.2          70.9               10.7 +/-    0.65      11.2 +/-    0.65  0.070 / 0.050
G18     104.5          25.8               11.2 +/-    1.36      21.5 +/-    1.36  0.030 / 0.020
G22     301.6          11.8                6.9 +/-    9.35      18.6 +/-    9.35  0.040 / 0.030
G25     99.2           9.4               -17.0 +/-    5.07     -47.9 +/-    5.07  0.040 / 0.040
G31     176.8          43.5               13.5 +/-    0.88      18.6 +/-    0.88  0.050 / 0.030
G32     10.3           66.2               11.0 +/-    0.52      11.9 +/-    0.52  0.040 / 0.020