PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/06-19:58:00
G10     245.4          23.9               11.8 +/-    0.99      23.7 +/-    0.99  0.150 / 0.490
G13     59.0           31.8                8.0 +/-    1.06      13.6 +/-    1.06  0.180 / 0.520
G15     101.5          58.1                9.5 +/-    1.71      10.9 +/-    1.71  0.050 / 0.060
G16     301.6          15.6                7.3 +/-    2.12      17.8 +/-    2.12  0.060 / 0.060
G20     262.7          47.3                9.4 +/-    3.79      12.3 +/-    3.79  0.050 / 0.140
G21     326.2          55.0               10.0 +/-    0.60      11.9 +/-    0.60  0.100 / 0.130
G26     274.1          17.6                9.0 +/-    2.80      20.9 +/-    2.80  0.030 / 0.030
G29     161.4          57.7               10.9 +/-    0.67      12.7 +/-    0.67  0.050 / 0.040