PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/12-03:28:00
G02     53.6           37.0                5.7 +/-    1.04       8.7 +/-    1.04  0.160 / 0.460
G05     71.2           65.8                7.1 +/-    0.65       7.7 +/-    0.65  0.120 / 0.520
G12     188.3          43.6                8.5 +/-    0.51      11.7 +/-    0.51  0.130 / 0.000
G13     133.3          9.7                -5.8 +/-   14.50     -16.2 +/-   14.50  0.160 / 0.430
G21     266.0          14.1                7.9 +/-    3.01      20.2 +/-    3.01  0.050 / 0.050
G25     248.1          56.7                7.7 +/-    1.84       9.0 +/-    1.84  0.050 / 0.050
G29     327.1          51.6                7.1 +/-    1.23       8.8 +/-    1.23  0.060 / 0.050