PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/17-21:12:40
G05     52.5           9.5                 7.3 +/-    4.47      20.5 +/-    4.47  0.110 / 0.380
G10     243.0          21.6               12.0 +/-    1.61      25.4 +/-    1.61  0.130 / 0.410
G13     62.4           33.0                8.0 +/-    1.32      13.1 +/-    1.32  0.040 / 0.080
G15     106.5          57.3                9.8 +/-    0.51      11.4 +/-    0.51  0.040 / 0.060
G16     304.9          15.1                7.1 +/-    1.51      17.7 +/-    1.51  0.070 / 0.110
G20     258.8          44.7               10.3 +/-    3.47      14.0 +/-    3.47  0.050 / 0.120
G21     322.9          52.9                9.2 +/-    0.67      11.2 +/-    0.67  0.030 / 0.040
G26     277.3          18.5                9.3 +/-    1.94      21.2 +/-    1.94  0.040 / 0.030
G29     159.8          60.9               10.1 +/-    0.39      11.4 +/-    0.39  0.110 / 0.220