PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-18:12:50
G08     262.9          17.3                7.8 +/-    1.30      18.4 +/-    1.30  0.310 / 0.670
G10     66.4           56.8                6.5 +/-    0.66       7.6 +/-    0.66  0.280 / 0.520
G11     309.0          19.6                7.8 +/-    1.24      17.3 +/-    1.24  0.030 / 0.040
G14     273.6          68.2                7.5 +/-    0.49       8.1 +/-    0.49  0.030 / 0.040
G18     309.6          36.8                5.8 +/-    1.20       8.9 +/-    1.20  0.120 / 0.310
G20     97.9           34.8                7.3 +/-    0.72      11.6 +/-    0.72  0.130 / 0.310
G21     154.3          10.2                9.3 +/-   18.29      25.9 +/-   18.29  0.070 / 0.060
G27     232.3          15.0                7.9 +/-    1.62      19.7 +/-    1.62  0.060 / 0.040
G31     180.5          29.8               10.3 +/-    1.97      18.1 +/-    1.97  0.110 / 0.190
G32     343.4          73.3                7.6 +/-    0.53       7.9 +/-    0.53  0.130 / 0.180