PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/29-03:13:00
G02     52.7           38.0                6.1 +/-    1.35       9.2 +/-    1.35  0.040 / 0.050
G05     74.7           66.5                7.1 +/-    0.50       7.6 +/-    0.50  0.050 / 0.050
G12     187.1          43.1               10.1 +/-    0.48      14.0 +/-    0.48  0.030 / 0.030
G20     213.7          15.8               14.4 +/-    3.26      35.1 +/-    3.26  0.030 / 0.030
G21     263.7          11.3                1.8 +/-   20.66       4.8 +/-   20.66  0.100 / 0.230
G25     255.3          56.9                8.9 +/-    1.79      10.4 +/-    1.79  0.140 / 0.280
G29     321.8          45.3                8.6 +/-    0.86      11.5 +/-    0.86  0.150 / 0.280