PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-21:28:00
G02     38.1           51.2               11.4 +/-    1.15      14.1 +/-    1.15  0.030 / 0.030
G05     123.4          67.1               11.6 +/-    0.56      12.5 +/-    0.56  0.040 / 0.030
G06     58.2           9.4                 9.2 +/-    2.02      25.9 +/-    2.02  0.040 / 0.050
G12     188.4          57.9               13.4 +/-    0.35      15.5 +/-    0.35  0.040 / 0.050
G25     284.9          57.1                5.0 +/-    1.64       5.8 +/-    1.64  0.160 / 0.300
G29     311.4          32.0               10.1 +/-    1.87      17.0 +/-    1.87  0.210 / 0.220