PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-01:27:50
G02     54.2           37.0                9.4 +/-    0.55      14.3 +/-    0.55  0.090 / 0.090
G05     69.5           65.3               10.6 +/-    0.38      11.5 +/-    0.38  0.050 / 0.100
G12     185.6          39.7               13.6 +/-    1.03      19.9 +/-    1.03  0.180 / 0.560
G13     133.7          10.4               -1.3 +/-   31.52      -3.5 +/-   31.52  0.200 / 0.590
G21     265.5          12.4               11.9 +/-    6.01      31.4 +/-    6.01  0.040 / 0.070
G25     250.0          56.0               11.1 +/-    0.91      13.1 +/-    0.91  0.030 / 0.040
G29     323.1          47.0               10.0 +/-    1.18      13.1 +/-    1.18  0.060 / 0.080