PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/09-21:42:30
G02     37.7           51.5                8.2 +/-    0.42      10.1 +/-    0.42  0.030 / 0.030
G05     124.7          66.8                9.0 +/-    0.80       9.7 +/-    0.80  0.020 / 0.030
G12     188.9          58.7               10.6 +/-    1.64      12.1 +/-    1.64  0.030 / 0.040
G25     286.2          56.9                8.0 +/-    1.58       9.3 +/-    1.58  0.030 / 0.060
G29     311.0          31.5                7.8 +/-    1.45      13.2 +/-    1.45  0.040 / 0.060