PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-01:57:40
G02     46.2           43.5                5.6 +/-    0.96       7.7 +/-    0.96  0.040 / 0.050
G05     96.8           68.9                6.0 +/-    0.50       6.4 +/-    0.50  0.040 / 0.040
G12     191.5          53.8                9.8 +/-    0.90      11.8 +/-    0.90  0.030 / 0.040
G25     268.0          58.8                7.4 +/-    3.13       8.5 +/-    3.13  0.030 / 0.050
G29     319.8          43.0                6.8 +/-    0.96       9.4 +/-    0.96  0.030 / 0.030