PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/16-18:28:10
G08     284.4          22.5                8.0 +/-    1.54      16.7 +/-    1.54  0.080 / 0.110
G10     25.3           63.0                6.2 +/-    1.34       6.9 +/-    1.34  0.080 / 0.110
G14     239.2          54.1               10.3 +/-    2.36      12.4 +/-    2.36  0.230 / 0.320
G18     75.6           45.0                8.3 +/-    1.40      11.2 +/-    1.40  0.200 / 0.340
G21     148.8          26.1               10.1 +/-    1.04      19.2 +/-    1.04  0.260 / 0.160
G24     49.7           22.1                6.9 +/-    3.04      14.4 +/-    3.04  0.110 / 0.220
G27     244.3          26.4               10.0 +/-    2.07      19.0 +/-    2.07  0.030 / 0.020
G31     182.9          12.8                8.3 +/-    2.53      21.8 +/-    2.53  0.030 / 0.020
G32     267.8          72.9                7.5 +/-    0.43       7.8 +/-    0.43  0.130 / 0.090