PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/08-15:57:50
G07     343.7          61.6                7.6 +/-    0.98       8.5 +/-    0.98  0.090 / 0.220
G08     99.5           51.5                9.9 +/-    0.49      12.3 +/-    0.49  0.090 / 0.210
G09     196.1          75.3                9.2 +/-    1.01       9.5 +/-    1.01  0.120 / 0.390
G11     145.0          13.9               10.3 +/-    3.07      26.3 +/-    3.07  0.140 / 0.550
G23     155.1          41.5               12.1 +/-    0.70      17.2 +/-    0.70  0.040 / 0.040
G27     56.8           32.9                7.5 +/-    0.58      12.3 +/-    0.58  0.030 / 0.040
G28     235.5          24.7                8.7 +/-    2.48      17.2 +/-    2.48  0.040 / 0.080
G30     302.9          36.9                8.5 +/-    1.15      13.0 +/-    1.15  0.040 / 0.090