Figure 3
![Figure 3](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2415-14-122/MediaObjects/12886_2014_Article_485_Fig3_HTML.jpg)
Mean acrophase of all subjects. Polar diagram of all 52 subjects included in the study. The majority showed a mean acrophase between 06:00 h and 12:00 h.
Mean acrophase of all subjects. Polar diagram of all 52 subjects included in the study. The majority showed a mean acrophase between 06:00 h and 12:00 h.