TABLE lO.-Carbon monoxide measured under realistic conditions Study Ventilation Monibrlng CWditiOM Levela (ppm) Mean Nonsmoking contmle @Pm) Mean Eadre et al. (1978) Bcafea Varied Not given 20 mill sempleu 2-23 (outdoore) O-15 Room 18 emokma Not given 20 mln snmplea 60 0 (0ukJoonl) Hospital lobby 12 to 90 amokem Not given 20 mln samples 5 2train 2 to 3 smokers Not given 20 min namplea 44 wmpartmenta car 3 amokera Natural, open 20 min aample 14 0 (0utdooIu) 2 Bmokera Natural, cloeed 20 min samples !?a 0 (outdoore) Can0 et al. (1970) Submarines 68 ma 157 c;sarettes per&Y 94-103 cigarettea w* &Y YeS Ye0 <40 mm <40 mm Chappell and Parker wl7) 10 offices 16 resteurant3 14 nightclubs and taverns Tavern Not given Not given Not 9iven Not given value4 not given valuea not given valuea not glven Arti&ial None of!?@ 1440 ft.' Natural, open 17x2-3min samples 17X29min -Pl- 19 x 2-3 min mamplm 18XMmiJJ anmplee 2x2-3min BEUUPlW 2-3mlnaamplee 3omlnafter amaking 2.5 f 1.0 1.5-4.6 2.5 f 1.0 1.5-4.5 butdoors) 4.0 f 2.5 1.0-9.6 2.5 f 1.6 1.0-6.0 (outdwm) 13.0 f 7.0 3.0-29.0 3.0 f 2.0 1.06.0 bladom~ 8.5 =tPW 10.0 (peak) 1.0 t; RI TABLE 10.4ntinud Study Coburn et al. ~oorrm Not given Not given (lssa) Not &en 4.9-9.0 N-oked roome 2.2 f 0.96 oA-4.6 Cuddeback Tavern 1 16-294 people 6 changedhr 8 br continuous 11.6 10-l-12 Et) 2 wdwd 2hrafteremoking -1 Tavern 2 Not given l-2 cbangen/br 8 hr amtiauoun 17 -CM?2 valua not given 2brefterMokblg -12 valum not given U.S. Dept. of 18 military 165-219 people Mecbwlcal 6-7 hr contlnuoue