PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-21:42:20
G10     298.5          52.9                8.1 +/-    1.56       9.8 +/-    1.56  0.040 / 0.040
G15     46.3           29.3                6.6 +/-    1.37      11.7 +/-    1.37  0.040 / 0.040
G20     353.6          65.2                9.1 +/-    0.77       9.9 +/-    0.77  0.060 / 0.080
G21     92.6           75.0               10.0 +/-    0.45      10.3 +/-    0.45  0.060 / 0.100
G24     99.6           26.5                9.5 +/-    1.04      17.9 +/-    1.04  0.150 / 0.100
G27     301.4          34.1                8.0 +/-    0.78      12.9 +/-    0.78  0.100 / 0.200
G32     209.9          31.7               12.0 +/-    0.98      20.3 +/-    0.98  0.060 / 0.060