Abundance of Ixodes ricinus and prevalence of Borrelia burgdorferi s.l. in the nature reserve Siebengebirge, Germany, in comparison to three former studies from 1978 onwards

Table 5 Monthly precipitation heights [mm] near the Siebengebirge ^a in different years

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year	Summer months^b
1987	59.6	68.9	104.0	39.0	70.6	123.0	126.8	83.3	50.2	38.2	80.6	42.3	73.9	100.9
1988	72.3	68.1	160.0	31.0	19.2	49.9	134.8	27.1	52.2	58.2	85.9	112.1	72.6	57.8
1989	27.6	57.1	65.8	103.1	26.3	61.1	49.9	67.9	37.8	62.6	38.4	95.1	57.7	51.3
2002	56.3	122.0	58.9	75.1	44.8	43.9	89.4	97.2	29.4	89.9	93.5	90.5	74.2	68.8
2003	77.1	29.2	43.5	43.4	55.2	72.7	53.4	55.3	50.8	95.1	45.6	54.0	56.3	59.2
2006	25.3	64.6	79.3	68.4	99.3	37.5	17.0	96.5	32.8	38.0	85.0	55.9	58.3	62.6
2007	82.4	59.8	53.5	1.6	129.6	105.8	127.8	193.0	59.9	33.2	70.8	52.2	80.8	139.1
2008	35.6	38.5	71.0	64.0	36.6	89.8	131.7	62.9	52.1	80.4	45.1	55.9	63.6	80.3

^a Data were obtained from the weather station Cologne/Bonn (no. 10513) of the Deutscher Wetterdienst.
^b The mean precipitation heights of the summer months were obtained by calculating the monthly precipitation from May to August of the same year.

ISSN: 1756-3305