PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-22:42:50
G10     279.6          45.9                9.6 +/-    1.14      12.8 +/-    1.14  0.060 / 0.030
G15     50.9           40.6                7.3 +/-    1.02      10.5 +/-    1.02  0.050 / 0.040
G20     319.8          63.8                9.1 +/-    0.84      10.0 +/-    0.84  0.060 / 0.050
G21     33.2           76.5                9.6 +/-    0.75       9.9 +/-    0.75  0.050 / 0.050
G24     112.7          20.0               10.3 +/-    1.47      22.6 +/-    1.47  0.220 / 0.420
G27     313.4          26.0                7.7 +/-    2.39      14.7 +/-    2.39  0.230 / 0.250
G29     167.9          20.8               10.1 +/-    1.61      21.7 +/-    1.61  0.070 / 0.060
G32     205.9          18.1               13.7 +/-    2.28      31.5 +/-    2.28  0.070 / 0.050