Anopheles gambiae s.l. adult female captures and rainfall for rainy seasons 2005, 2006 and 2007. The figure shows the sum of adult female An. gambiae s.l. captures from all six CDC miniature light traps and rainfall observations, for the rainy seasons of 2005 to 2007. Rainfall observations commenced in May 2005 and mosquito sampling commenced in late June 2005. During the months of June to November, when mosquito population abundance increases, sampling was undertaken on a weekly basis. During the dry season months of December to May, sampling was conducted monthly. Mosquito captures are shown in red and recorded on the left-hand axis, with crosses to mark the dates of trap deployments. Hourly rainfall measurements are shown in blue and recorded on the right-hand axis.