PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/11-21:28:10
G07     324.1          55.2               11.4 +/-    0.65      13.5 +/-    0.65  0.290 / 0.360
G08     111.4          47.6               12.2 +/-    0.46      15.8 +/-    0.46  0.150 / 0.220
G09     228.8          82.6               11.2 +/-    0.30      11.2 +/-    0.30  0.080 / 0.050
G16     43.6           18.5                7.8 +/-    2.87      17.7 +/-    2.87  0.130 / 0.220
G23     152.0          54.4               12.3 +/-    0.52      14.8 +/-    0.52  0.040 / 0.040
G27     68.8           37.2               10.2 +/-    0.87      15.5 +/-    0.87  0.040 / 0.050
G28     229.4          18.3               12.2 +/-    2.82      27.9 +/-    2.82  0.150 / 0.260
G30     293.7          28.3               10.0 +/-    1.21      18.2 +/-    1.21  0.180 / 0.340