PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/23-22:13:10
G10     281.8          46.8               11.8 +/-    1.52      15.5 +/-    1.52  0.060 / 0.050
G15     50.1           39.4                8.6 +/-    1.25      12.6 +/-    1.25  0.050 / 0.040
G20     324.2          64.3                8.4 +/-    0.91       9.3 +/-    0.91  0.080 / 0.120
G21     40.4           76.9               10.0 +/-    0.36      10.3 +/-    0.36  0.080 / 0.130
G24     111.3          20.9               10.2 +/-    0.68      21.9 +/-    0.68  0.080 / 0.170
G27     312.1          27.2                9.3 +/-    1.57      17.4 +/-    1.57  0.080 / 0.150
G29     168.0          19.3                9.1 +/-    0.87      20.4 +/-    0.87  0.050 / 0.070
G32     206.2          19.9                9.7 +/-    1.36      21.3 +/-    1.36  0.050 / 0.060