PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/08-16:12:40
G01     39.7           13.5                9.0 +/-    3.18      23.2 +/-    3.18  0.120 / 0.210
G06     174.0          43.0               12.8 +/-    1.02      17.8 +/-    1.02  0.090 / 0.320
G13     236.8          20.0               11.8 +/-    3.32      26.0 +/-    3.32  0.240 / 0.380
G15     270.8          11.2               12.9 +/-    1.38      35.1 +/-    1.38  0.270 / 0.380
G17     13.5           66.0               11.0 +/-    0.52      12.0 +/-    0.52  0.070 / 0.120
G19     294.4          71.8               11.7 +/-    0.71      12.3 +/-    0.71  0.110 / 0.130
G24     316.2          20.4               11.4 +/-    2.05      24.9 +/-    2.05  0.300 / 0.290
G28     76.3           45.0               12.9 +/-    1.71      17.4 +/-    1.71  0.370 / 0.350
G30     155.8          26.3               10.9 +/-    0.77      20.6 +/-    0.77  0.030 / 0.030