PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-17:12:50
G07     340.9          60.8               13.0 +/-    0.51      14.7 +/-    0.51  0.040 / 0.090
G08     100.6          51.1               14.4 +/-    0.58      18.0 +/-    0.58  0.040 / 0.080
G09     198.5          76.4               13.3 +/-    1.24      13.6 +/-    1.24  0.040 / 0.050
G11     145.7          13.1               15.2 +/-    3.92      39.6 +/-    3.92  0.050 / 0.050
G16     46.0           11.5               10.9 +/-    1.85      29.3 +/-    1.85  0.060 / 0.110
G23     155.0          43.6               15.2 +/-    0.89      20.8 +/-    0.89  0.080 / 0.110
G27     58.3           33.7               11.7 +/-    0.82      19.1 +/-    0.82  0.030 / 0.040
G28     234.7          24.0               15.6 +/-    4.64      31.2 +/-    4.64  0.030 / 0.040
G30     301.5          35.5               12.7 +/-    0.85      19.9 +/-    0.85  0.050 / 0.080