PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/05-01:57:20
G02     54.9           35.9                5.9 +/-    0.91       9.1 +/-    0.91  0.050 / 0.060
G05     67.1           64.6                7.3 +/-    0.31       8.0 +/-    0.31  0.040 / 0.060
G12     187.7          41.6                8.9 +/-    1.61      12.6 +/-    1.61  0.050 / 0.080
G13     131.8          10.9                3.0 +/-   25.52       8.3 +/-   25.52  0.050 / 0.110
G21     267.1          14.4                7.5 +/-    1.35      19.0 +/-    1.35  0.140 / 0.250
G25     245.9          55.7                7.6 +/-    0.58       9.0 +/-    0.58  0.120 / 0.300
G29     327.5          52.2                6.4 +/-    0.84       7.9 +/-    0.84  0.060 / 0.070