Figure 4.  Frequency of water contact. Frequency of water
contact by season, hour of the day, age, sex (boys up = positive
values; girls down = negative values), and type of activity (see
legend) for 1,651 inhabitants of the rural village of Ndombo in
Northern Senegal as recorded during 175 days of observational
studies. This graph reflects the division of the 121,771 total
frequencies given in Table 1, where combinations of two or three
activities were attributed to the corresponding single
activities with weight of 0.50 and 0.33, respectively. Hour of
the day is the first moment of each one-hour interval.  Sow et
al. BMC Infectious Diseases 2011 11:198  
doi:10.1186/1471-2334-11-198 Download authors' original image