PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/28-16:12:30
G08     295.9          23.6                6.9 +/-    1.86      13.9 +/-    1.86  0.060 / 0.080
G10     359.3          62.6                7.3 +/-    0.84       8.1 +/-    0.84  0.050 / 0.080
G14     226.0          43.2               10.7 +/-    0.78      14.8 +/-    0.78  0.060 / 0.120
G20     59.2           54.4                8.0 +/-    0.46       9.6 +/-    0.46  0.070 / 0.100
G21     143.6          40.8               11.3 +/-    1.25      16.3 +/-    1.25  0.050 / 0.080
G24     56.9           24.7                8.7 +/-    0.62      17.1 +/-    0.62  0.050 / 0.080
G27     262.6          33.6                7.8 +/-    1.04      12.7 +/-    1.04  0.040 / 0.040
G32     237.2          62.7               10.4 +/-    0.67      11.5 +/-    0.67  0.030 / 0.040