PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/31-03:27:50
G08     296.5          23.1                7.8 +/-    0.92      15.8 +/-    0.92  0.050 / 0.100
G10     354.5          62.5                6.2 +/-    0.78       6.8 +/-    0.78  0.050 / 0.100
G14     226.3          43.9                9.7 +/-    1.12      13.3 +/-    1.12  0.060 / 0.100
G18     54.9           54.9                5.5 +/-    1.04       6.6 +/-    1.04  0.060 / 0.100
G21     143.3          45.2               10.5 +/-    1.69      14.1 +/-    1.69  0.040 / 0.080
G24     62.1           28.4                5.4 +/-    0.96       9.8 +/-    0.96  0.040 / 0.090
G27     257.9          33.7                8.2 +/-    1.62      13.3 +/-    1.62  0.030 / 0.030
G32     237.4          62.7                8.5 +/-    0.86       9.4 +/-    0.86  0.030 / 0.030