PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-15:43:10
G07     308.5          47.1               10.5 +/-    0.95      13.7 +/-    0.95  0.040 / 0.080
G08     129.0          41.6               12.3 +/-    0.94      17.5 +/-    0.94  0.050 / 0.070
G09     296.0          80.3                9.8 +/-    0.97       9.9 +/-    0.97  0.090 / 0.180
G16     42.3           21.0                7.2 +/-    1.53      15.5 +/-    1.53  0.080 / 0.180
G23     144.6          56.8               11.3 +/-    0.85      13.2 +/-    0.85  0.100 / 0.210
G27     76.4           37.1                9.4 +/-    0.97      14.4 +/-    0.97  0.110 / 0.180
G28     225.1          14.4               12.9 +/-    3.31      32.6 +/-    3.31  0.040 / 0.030
G30     287.7          23.9               10.5 +/-    1.34      21.0 +/-    1.34  0.030 / 0.030