Figure 2. Seasonal distribution of 25(OH)D, 24,25(OH)2D3 and VMR in ASPS and ASPS family. The line within the boxplots denotes the median of the parameter. The crystal within the boxplot denotes the mean of the parameter. ASPS: Austrian Stroke Prevention Study; ASPS-FAM: Austrian Stroke Prevention Family Study; VMR: vitamin D metabolite ratio.