Table 4– Headspace hydrogen cyanide (HCN) concentrations for mucoid and nonmucoid samples of the Liverpool, Midland_1 and Stoke-on-Trent strains
StrainSamples nHCN concentration ppbv
24 h48 h76 h92 h
Liverpool
 Mucoid312 (11–70)161 (156–526)532 (435–988)2860 (2131–2971)
 Nonmucoid5123 (62–216)949 (159–2740)3341 (3034–4505)4028 (3104–5921)
Midlands_1
 Mucoid14127 (71–184)182 (138–368)1598 (816–2753)804 (725–2393)
 Nonmucoid558 (17–85)87 (16–1240)167 (29–1079)544 (68–2183)
Stoke-on-Trent
 Mucoid711 (8–17)10 (9–28)56 (16–186)39 (28–97)
 Nonmucoid822 (15–29)27 (23–33)36 (33–104)77 (48–119)
  • Data are presented as median (interquartile range), unless otherwise stated. ppbv: parts per billion by volume.