PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/20-23:58:00
G08     305.7          19.5                5.3 +/-    1.59      11.7 +/-    1.59  0.040 / 0.060
G10     353.0          62.2                5.7 +/-    0.79       6.4 +/-    0.79  0.040 / 0.060
G14     222.7          37.2                9.8 +/-    1.26      15.0 +/-    1.26  0.070 / 0.160
G20     53.2           56.3                7.9 +/-    0.80       9.2 +/-    0.80  0.080 / 0.170
G21     141.8          49.7                8.9 +/-    0.41      11.3 +/-    0.41  0.110 / 0.220
G24     65.3           29.1                7.8 +/-    1.48      13.9 +/-    1.48  0.110 / 0.240
G27     264.5          35.7               10.6 +/-    1.14      16.7 +/-    1.14  0.040 / 0.050
G32     231.5          60.3                8.6 +/-    1.57       9.7 +/-    1.57  0.050 / 0.050