PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/23-04:27:10
G02     45.9           43.7                4.5 +/-    1.20       6.2 +/-    1.20  0.030 / 0.050
G05     99.6           69.0                5.6 +/-    0.77       6.0 +/-    0.77  0.040 / 0.040
G06     60.3           9.6                 3.4 +/-    2.47       9.7 +/-    2.47  0.040 / 0.040
G12     191.9          54.4                6.3 +/-    0.42       7.5 +/-    0.42  0.040 / 0.050
G25     267.3          59.3                6.1 +/-    2.25       7.0 +/-    2.25  0.030 / 0.030
G29     320.7          44.3                3.8 +/-    0.79       5.2 +/-    0.79  0.030 / 0.030