PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/27-05:27:30
G02     53.1           37.5                3.5 +/-    0.84       5.3 +/-    0.84  0.040 / 0.050
G05     74.7           66.4                5.3 +/-    0.62       5.7 +/-    0.62  0.050 / 0.050
G12     187.9          43.8                7.0 +/-    0.61       9.6 +/-    0.61  0.150 / 0.140
G20     209.7          33.0                6.3 +/-    1.12      10.3 +/-    1.12  0.160 / 0.120
G21     263.9          12.0                2.7 +/-   10.15       7.2 +/-   10.15  0.230 / 0.430
G25     255.5          56.9                5.3 +/-    2.07       6.2 +/-    2.07  0.300 / 0.440
G29     322.3          46.0                4.3 +/-    0.52       5.7 +/-    0.52  0.030 / 0.030