Figure 6From: Spatial and temporal patterns of porcine reproductive and respiratory syndrome virus (PRRSV) genotypes in Ontario, Canada, 2004–2007Space-time K-function for the range of 90 days and 20 km for PRRSV RFLP type 1-18-4 in Ontario from 2004–2007. The black boundary line on the graph indicates where the K-statistic = 1.Back to article page