PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-18:13:00
G07     316.2          52.4               11.1 +/-    0.87      13.6 +/-    0.87  0.040 / 0.050
G08     122.3          43.1               11.8 +/-    0.70      16.3 +/-    0.70  0.050 / 0.050
G09     293.2          80.5               10.7 +/-    0.60      10.8 +/-    0.60  0.060 / 0.060
G16     42.3           25.8                8.7 +/-    2.12      16.6 +/-    2.12  0.050 / 0.070
G23     147.1          61.2               12.9 +/-    0.48      14.5 +/-    0.48  0.210 / 0.370
G27     77.6           37.9               10.3 +/-    0.97      15.6 +/-    0.97  0.140 / 0.520
G28     225.2          11.5                3.6 +/-   25.10       9.8 +/-   25.10  0.040 / 0.020
G30     288.6          24.8               10.1 +/-    2.12      19.8 +/-    2.12  0.040 / 0.020