PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-00:28:00
G02     39.6           49.8               10.6 +/-    0.52      13.4 +/-    0.52  0.030 / 0.050
G05     120.7          67.1               12.8 +/-    0.44      13.8 +/-    0.44  0.030 / 0.050
G12     191.2          59.3               13.5 +/-    1.21      15.4 +/-    1.21  0.030 / 0.040
G25     286.0          56.6               11.2 +/-    1.01      13.1 +/-    1.01  0.030 / 0.040
G29     311.6          32.3               11.5 +/-    1.60      19.3 +/-    1.60  0.030 / 0.060