Daily mean apparent temperatures at lag 0–3 and expected daily numbers of attributable no-white tag visits during the study period.

<p>Daily mean apparent temperatures at lag 0–3 in 2011 and 2012 (upper panel); expected daily numbers of attributable no-white tag visits (for each day the median of the distribution is reported) in 2011 and 2012 (lower panel). In the upper panel, horizontal continuous lines represent the estimated threshold and dotted lines represent the associated 90% confidence interval (CI); in the lower panel, dotted lines represent the 10th and 90th percentiles of the distribution of the daily number of attributable visits. The values on the <i>x</i> axis refer to the calendar days within each warm season, from 1, representing May 15^th, to 122, representing September 15^th.