Evaluation of farm-level parameters derived from animal movements for use in risk-based surveillance programmes of cattle in Switzerland

Table 3 Yearly and monthly network metrics for farms in 2012

Network	ID				OD				ICC				OCC
	mean	median	max	g₁	mean	median	max	g₁	mean	median	max	g₁	mean	median	max	g₁
Yearly	7.75	3	893	13.26	10.44	8	302	6.27	28’051.85	30’673	45’740	−0.91	29’808.64	3’8247	40’848	−1.16
January	1.12	0	211	15.39	2.01	2	103	10.55	73.25	0	3’525	4.87	83.90	3	2’165	4.98
February	1.03	0	250	21.27	1.94	1	42	5.81	28.62	0	12’822	35.58	35.26	5	1’368	5.25
March	1.12	0	231	16.72	2.01	2	49	5.92	44.89	0	7’632	7.49	53.11	3	1’858	5.78
April	1.13	0	199	16.80	1.97	2	51	6.18	67.11	0	4’017	7.27	76.79	3	1’832	3.92
May	1.07	0	278	22.77	2.13	2	49	5.50	30.43	0	5’473	8.59	41.69	3	2’478	9.04
June	0.92	0	227	20.11	2.35	2	58	5.39	29.38	0	4’745	9.21	41.23	4	2’279	5.63
July	1.04	0	209	18.76	1.80	1	83	10.09	14.55	0	4’201	12.31	17.44	2	892	6.32
August	1.27	1	216	16.52	1.84	1	56	6.26	25.32	1	2’856	8.85	26.56	2	1’218	6.59
September	1.86	1	167	15.16	1.70	1	56	5.94	107.39	1	10’608	5.83	89.21	3	3’192	5.58
October	1.48	1	337	22.34	2.06	2	56	6.00	111.45	1	3’898	4.55	105.72	3	2’833	4.74
November	1.26	0	262	19.11	2.16	2	71	6.56	50.69	0	9’492	9.16	58.15	4	2’196	5.26
December	1.10	0	250	22.57	1.92	1	49	5.34	58.33	0	2’627	5.50	65.47	2	2’400	5.28

ID In-degree, OD out-degree, ICC ingoing contact chain, OCC outgoing contact chain; g ₁ skewness, Max maximum

ISSN: 1746-6148