. Author manuscript; available in PMC: 2016 Jan 1.

Published in final edited form as: J Occup Environ Hyg. 2015;12(4):266–275. doi: 10.1080/15459624.2014.974808

Table II.

Contact activity and surface area parameter distributions (see Table I for parameter definitions)

Parameter	Distribution	GM^*	GSD^*	Min^*	Max^*	Unit	Source
H_{surface,non-porous}	log-normal	4.1	1.6			contacts/min	⁽⁶⁾
H_{surface,porous}	log-normal	5.5	1.5			contacts/min	⁽⁶⁾
H_mouth	log-normal	0.18	3.3			contacts/min	⁽⁶⁾
H_eyes	log-normal	0.06	3.3			contacts/min	⁽³⁾
H_nose	log-normal	0.01	66.7			contacts/min	⁽³⁾
A_hand	uniform			890	1070	cm²	⁽¹⁷⁾
A_eye	uniform			0.10	2	cm²	Assumed
A_nose	uniform			0.10	10	cm²	Assumed
A_mouth	uniform			1	41	cm²	⁽¹⁸⁾
FSA	log-normal	0.15	1.2			unitless	⁽¹²⁾

log-normal distribution defined by geometric mean (GM) and geometric standard deviation (GSD); uniform distribution defined by minimum (Min) and maximum (Max).