PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/16-17:27:50
G08     283.5          23.5                6.0 +/-    1.59      12.1 +/-    1.59  0.090 / 0.130
G10     25.2           62.6                5.3 +/-    2.29       5.9 +/-    2.29  0.070 / 0.120
G14     237.2          53.6                7.5 +/-    2.17       9.0 +/-    2.17  0.140 / 0.110
G18     317.1          19.1                4.8 +/-    0.74      10.8 +/-    0.74  0.110 / 0.170
G20     75.4           47.9                5.6 +/-    0.86       7.2 +/-    0.86  0.090 / 0.080
G21     149.2          29.8                7.3 +/-    1.20      12.9 +/-    1.20  0.090 / 0.070
G24     47.1           18.5                6.6 +/-    2.30      15.1 +/-    2.30  0.030 / 0.030
G27     249.6          27.9                6.7 +/-    2.02      12.2 +/-    2.02  0.030 / 0.030
G32     262.9          72.3                6.2 +/-    0.65       6.5 +/-    0.65  0.110 / 0.120