PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/15-21:43:10
G10     251.3          28.9                9.8 +/-    1.90      17.5 +/-    1.90  0.150 / 0.970
G13     52.2           28.3                5.9 +/-    0.68      10.7 +/-    0.68  0.140 / 1.010
G15     85.0           57.6                8.8 +/-    0.50      10.2 +/-    0.50  0.080 / 0.110
G16     294.9          15.6                5.7 +/-    4.00      14.0 +/-    4.00  0.080 / 0.100
G20     271.5          51.5                8.8 +/-    1.21      10.9 +/-    1.21  0.040 / 0.060
G21     334.3          60.0                9.1 +/-    0.81      10.3 +/-    0.81  0.040 / 0.050
G26     267.4          15.2                9.9 +/-    1.14      24.5 +/-    1.14  0.070 / 0.180
G29     163.7          49.1                9.9 +/-    0.80      12.6 +/-    0.80  0.060 / 0.180