Extended Data Fig. 1: Study area and aerial sampling effort.
From: Windborne long-distance migration of malaria mosquitoes in the Sahel

a, Map of the study area, showing aerial-sampling villages, as well as the number of sampling nights per village. Schematic map of Africa, showing the Sahel region. The base map was generated using the ggplot2 package in R68, under a GPL-2 license. b, Nightly sampling effort by year. The extension of the axes under zero indicates the sampling nights (by village), and the needles denote the total number of mosquitoes per night (regardless of the number of collecting panels per night). Dry and wet seasons are indicated by yellow and green, respectively, in the key under the x axis.