TABLE 1.

Means and variances of observed (T_d) and standardized (T_ds) detection times of single cells of L. monocytogenes in different physiological states

Physiological state	No. of values	Td		Tds
		Mean (h)	Var(Td) (h2)	Mean (h)	Var(Tds) (h2)	Var(lag) (h2)	Var(lag)/Var(Tds) (%)a
Exponential growth phase	544	18.41	0.385	18.50	0.208	0.023	11.1
HCl	92	20.43	1.219	20.45	1.211	1.026	84.7
Cold	109	21.16	12.385	21.13	12.412	12.227	98.5
Lactic acid	108	23.91	7.372	22.74	7.320	7.135	97.5
Chlorine	143	24.38	36.173	24.30	36.001	35.816	99.5
NaOH	137	25.50	13.244	25.52	13.110	12.925	98.6
NaCl	108	26.05	36.149	26.23	34.762	34.577	99.5
Starvation	84	26.37	28.083	26.84	27.112	26.927	99.3
BAC	170	30.06	75.805	30.51	73.916	73.731	99.7
Heat	89	33.59	39.132	34.48	38.103	37.918	99.5

^aMinimum percentage of the variance explained by individual lag time variability as Var(lag) ≥ Var(T_d) − 0.185 h².