PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/09-18:27:50
G08     298.2          22.3                7.9 +/-    2.09      16.5 +/-    2.09  0.090 / 0.090
G10     355.2          62.6                5.9 +/-    0.79       6.6 +/-    0.79  0.110 / 0.080
G14     226.1          42.3               10.0 +/-    1.85      14.0 +/-    1.85  0.060 / 0.110
G18     58.9           52.5                7.5 +/-    0.94       9.2 +/-    0.94  0.050 / 0.100
G21     142.8          39.7                9.0 +/-    0.93      13.2 +/-    0.93  0.050 / 0.030
G24     61.8           28.3                6.9 +/-    2.12      12.5 +/-    2.12  0.040 / 0.040
G27     258.2          33.8                8.6 +/-    1.42      14.0 +/-    1.42  0.050 / 0.060
G32     237.3          62.5                9.0 +/-    1.72      10.0 +/-    1.72  0.040 / 0.070