PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-01:42:20
G02     37.6           51.6                9.5 +/-    0.89      11.7 +/-    0.89  0.050 / 0.040
G05     127.6          65.4                9.9 +/-    0.32      10.8 +/-    0.32  0.030 / 0.030
G06     56.1           12.5                5.9 +/-    0.85      15.7 +/-    0.85  0.040 / 0.040
G12     194.5          63.3               10.1 +/-    0.41      11.2 +/-    0.41  0.030 / 0.030
G25     291.7          55.0                9.5 +/-    1.00      11.3 +/-    1.00  0.040 / 0.050
G29     309.7          30.2                8.3 +/-    1.52      14.4 +/-    1.52  0.040 / 0.060