PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/17-18:43:00
G01     316.4          23.8                8.2 +/-    1.90      16.6 +/-    1.90  0.090 / 0.120
G10     90.2           48.4               10.2 +/-    1.45      13.2 +/-    1.45  0.130 / 0.150
G11     295.1          26.5               10.1 +/-    1.98      19.1 +/-    1.98  0.040 / 0.040
G14     321.5          71.3                9.1 +/-    0.37       9.6 +/-    0.37  0.050 / 0.030
G18     294.1          47.5                8.6 +/-    6.71      11.2 +/-    6.71  0.040 / 0.040
G20     111.1          23.9               10.9 +/-    1.10      21.9 +/-    1.10  0.040 / 0.040
G22     304.2          15.1                7.2 +/-    2.76      18.0 +/-    2.76  0.130 / 0.190
G25     89.4           11.0                8.1 +/-   23.78      22.1 +/-   23.78  0.130 / 0.230
G31     177.9          46.4                9.7 +/-    0.90      12.9 +/-    0.90  0.090 / 0.370
G32     17.6           63.1                8.9 +/-    0.64       9.9 +/-    0.64  0.100 / 0.230