PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/11-21:57:30
G02     46.6           44.0                9.7 +/-    1.28      13.2 +/-    1.28  0.030 / 0.050
G05     93.3           69.3               10.9 +/-    0.57      11.6 +/-    0.57  0.020 / 0.040
G12     185.4          46.9               15.0 +/-    1.67      19.7 +/-    1.67  0.040 / 0.060
G25     264.6          58.4               11.3 +/-    1.10      13.0 +/-    1.10  0.080 / 0.070
G29     317.9          39.8               10.7 +/-    1.78      15.5 +/-    1.78  0.040 / 0.060