PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/01-04:13:10
G02     54.0           36.6                4.8 +/-    0.84       7.3 +/-    0.84  0.130 / 0.530
G05     70.3           65.7                5.5 +/-    0.52       6.0 +/-    0.52  0.170 / 0.420
G12     188.2          43.1                6.5 +/-    0.75       9.0 +/-    0.75  0.050 / 0.050
G13     133.0          10.0               -4.9 +/-   14.70     -13.7 +/-   14.70  0.050 / 0.050
G21     266.5          14.8                5.5 +/-    2.80      13.7 +/-    2.80  0.160 / 0.390
G25     246.6          56.5                4.3 +/-    1.18       5.1 +/-    1.18  0.050 / 0.060
G29     327.9          52.6                5.2 +/-    1.87       6.3 +/-    1.87  0.060 / 0.080