PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-15:28:00
G02     41.8           48.2                6.7 +/-    0.86       8.6 +/-    0.86  0.040 / 0.040
G05     120.9          70.0                8.5 +/-    0.64       9.0 +/-    0.64  0.040 / 0.040
G12     187.4          52.4               10.5 +/-    1.12      12.8 +/-    1.12  0.060 / 0.050
G25     267.8          59.9                9.1 +/-    0.68      10.4 +/-    0.68  0.040 / 0.050
G29     315.7          37.3                7.8 +/-    1.42      11.8 +/-    1.42  0.020 / 0.020