PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/11-13:57:50
G07     358.1          64.8                7.0 +/-    0.98       7.6 +/-    0.98  0.030 / 0.040
G08     86.0           52.9                9.4 +/-    0.65      11.5 +/-    0.65  0.040 / 0.050
G09     185.6          65.8                8.9 +/-    1.73       9.7 +/-    1.73  0.080 / 0.160
G11     139.6          19.5                8.4 +/-    0.75      18.8 +/-    0.75  0.070 / 0.190
G23     157.1          30.8                9.3 +/-    0.74      16.1 +/-    0.74  0.150 / 0.440
G27     48.8           27.6                6.1 +/-    1.08      11.2 +/-    1.08  0.160 / 0.360
G28     242.3          31.0                9.0 +/-    0.66      15.4 +/-    0.66  0.060 / 0.100
G30     311.0          43.8                6.6 +/-    1.10       9.0 +/-    1.10  0.060 / 0.100