Table 5
Kendall’s τ-b correlation coefficients for environmental parameters with welfare measures

Kendall’s τ-b	Lameness 0	Lameness score 1	Hock score 0	Hock score 1	Footpad score 0	Footpad score 1
Air temperature	−0.572	0.572	0.216	−0.216	0.197	−0.197
Air speed	0.234	−0.234	−0.118	0.118	−0.500	0.500
Relative humidity	−0.756*	0.756*	0.457	−0.457	−0.121	0.121
Light intensity	−0.040	0.040	0.000	0.000	−0.839**	0.839**
CO2	0.000	0.000	−0.044	0.044	−0.093	0.093
NH3	−0.258	0.258	0.098	−0.098	−0.173	0.173
TAB	0.447	−0.447	0.028	−0.028	−0.030	0.030
TC	0.522	−0.522	−0.085	0.085	−0.030	0.030
TE	0.462	−0.462	−0.349	0.349	0.325	−0.325