Table 2 Best-fitting C2H3CN model abundances.
ModelAbundance
(parts per billion)
zr (km)N (cm−2)χ2P
Step (100 km)0.26 ± 0.041004.9 × 10141.250.001
Step (200 km)0.74 ± 0.072001.0 × 10141.070.19
Step (300 km)2.83 ± 0.243005.3 × 10131.010.44
Step (400 km)12.6 ± 1.14003.7 × 10131.020.40
FSH model0.36 ± 0.222971.4 × 10141.020.37