PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/27-17:28:00
G01     321.1          11.1              -18.5 +/-   16.76     -50.3 +/-   16.76  0.130 / 0.000
G08     262.9          17.3                9.2 +/-    1.45      21.7 +/-    1.45  0.030 / 0.030
G10     66.4           56.7                8.9 +/-    0.78      10.4 +/-    0.78  0.030 / 0.040
G11     309.0          19.7                7.4 +/-    1.29      16.3 +/-    1.29  0.130 / 0.280
G14     273.8          68.3               10.1 +/-    0.66      10.7 +/-    0.66  0.130 / 0.320
G18     309.5          37.1                7.0 +/-    1.41      10.7 +/-    1.41  0.070 / 0.050
G20     97.9           34.8                8.9 +/-    0.70      14.2 +/-    0.70  0.070 / 0.050
G27     232.5          15.0                9.4 +/-    1.70      23.3 +/-    1.70  0.090 / 0.180
G31     181.0          29.2               12.1 +/-    1.58      21.5 +/-    1.58  0.130 / 0.170
G32     342.1          73.4               10.3 +/-    0.58      10.7 +/-    0.58  0.070 / 0.100