PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-21:57:00
G02     47.7           43.0               10.9 +/-    0.97      15.2 +/-    0.97  0.020 / 0.030
G05     89.0           69.0               11.5 +/-    0.56      12.2 +/-    0.56  0.030 / 0.030
G12     185.1          45.3               13.6 +/-    0.51      18.2 +/-    0.51  0.040 / 0.050
G25     261.7          58.2               10.7 +/-    1.70      12.4 +/-    1.70  0.030 / 0.050
G29     318.7          41.0               11.4 +/-    1.06      16.3 +/-    1.06  0.060 / 0.060