PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/30-01:12:30
G07     355.6          64.5                5.0 +/-    0.39       5.5 +/-    0.39  0.070 / 0.130
G08     77.4           50.7                5.0 +/-    0.49       6.2 +/-    0.49  0.090 / 0.190
G09     180.3          61.3                6.3 +/-    0.94       7.1 +/-    0.94  0.030 / 0.030
G11     137.3          20.6                7.0 +/-    2.14      15.3 +/-    2.14  0.030 / 0.030
G23     159.2          33.4                6.1 +/-    1.29       9.9 +/-    1.29  0.110 / 0.090
G27     48.6           28.0                3.2 +/-    2.15       5.8 +/-    2.15  0.070 / 0.110
G28     244.9          35.0                6.1 +/-    1.96       9.7 +/-    1.96  0.060 / 0.080
G30     309.2          41.0                4.2 +/-    1.18       6.0 +/-    1.18  0.090 / 0.100