PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-20:43:00
G05     49.3           15.8                7.3 +/-    2.13      17.7 +/-    2.13  0.050 / 0.090
G10     237.4          15.6               13.1 +/-    1.53      32.2 +/-    1.53  0.050 / 0.080
G13     71.9           35.0                9.7 +/-    1.08      15.5 +/-    1.08  0.060 / 0.120
G15     121.5          53.8               11.6 +/-    0.30      14.0 +/-    0.30  0.090 / 0.130
G16     312.1          13.2                6.8 +/-    1.65      17.7 +/-    1.65  0.030 / 0.040
G20     250.6          39.0               11.7 +/-    0.72      17.3 +/-    0.72  0.030 / 0.050
G21     315.1          47.6                9.6 +/-    1.13      12.5 +/-    1.13  0.090 / 0.350
G26     285.4          19.9                7.6 +/-    1.43      16.8 +/-    1.43  0.120 / 0.360
G29     154.8          70.1               10.8 +/-    0.57      11.4 +/-    0.57  0.100 / 0.250