condition mean min max 2 h after light 39.59043333333333 37.6808 41.6207 6 h after light 63.134 61.1728 64.6511 10 h after light 67.4847 63.8979 70.2386 2 h after dark 74.2201 65.9457 85.7101 6 h after dark 62.2316 60.8287 63.4456 10 h after dark 53.3243 50.5077 54.8926