Pages 6-8 (5-7 pdf) discuss the sun as well as measurements across times of day. https://frontiersinzoology.biomedcentral.com/track/pdf/10.1186/1742-9994-10-80

Pages 6-8 (5-7 pdf) discuss the sun as well as measurements across times of day. https://frontiersinzoology.biomedcentral.com/track/pdf/10.1186/1742-9994-10-80 https://frontiersinzoology.biomedcentral.com/track/pdf/10.11...