Table 2.

Summary of climate- and behaviour-related measurements in pens of 64 farms with weaners.

Measurement	N Pens	Average	Median	Min	Max	Stdev
Pigs per pen	349	27.2	18	3	311	34.8
Pen length (m)	348	3.69	3.0	2	31	3.30
Pen width (m)	348	2.45	2.1	1	8	1.29
Pens per room	349	7.61	7	1	24	4.09
Room length (m)	347	11.4	11.0	4	26	4.82
Room width (m)	347	6.39	5.0	2	23	4.51
Room height (m)	349	2.83	3.0	1	6	0.73
Outdoor temperature (°C)	349	9.42	8.0	0	27	6.01
Indoor temperature (°C)	349	25.5	26.0	18	30	2.28
CO2 level (ppm)	349	2770	2700	34	6200	1.15
NH3 level (ppm)	346	14.4	10.0	1	68	11.7
Pig fouling score	349	0.09	0.0	0	2	0.36
Pen fouling score	349	0.12	0.0	0	2	0.37
Eye score	349	0.14	0.0	0	3	0.49
Tail score	349	0.04	0.0	0	2	0.22
Ear score	349	0.18	0.0	0	2	0.48
Panting	349	0.19	0.0	0	10	1.02
Pumping	349	0.14	0.0	0	5	0.66
Sneezing/coughing	349	4.13	0.0	0	150	15.5
Huddling	349	0.22	0.0	0	2	0.52
Shivering	349	0.02	0.0	0	1	0.14
Lying separately	349	0.15	0.0	0	2	0.40
Posture	349	0.63	0.0	0	2	0.71
Standing pigs (n)	349	24.7 (91%)	14.0	0	300	34.3
Mortality (%)	64	4.56	3.0	0	17	31.6
Antibiotics	64	9.76	5.0	0	50	22.0
Space allowance (m2/pig)	349	0.42	0.36	0.15	3.38	0.34
Room volume (m3/pig)	349	1.39	1.2	1.0	4.38	0.73