PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/14-19:43:10
G02     47.5           43.5                8.5 +/-    1.18      11.7 +/-    1.18  0.020 / 0.020
G05     88.2           69.3                8.7 +/-    0.41       9.2 +/-    0.41  0.030 / 0.020
G12     183.5          43.1                8.8 +/-    0.95      12.2 +/-    0.95  0.040 / 0.060
G25     258.6          58.3               10.1 +/-    1.20      11.7 +/-    1.20  0.040 / 0.050
G29     319.2          41.6                7.6 +/-    0.88      10.8 +/-    0.88  0.040 / 0.050