condition mean min max 4 h after light 1.69677 1.42823 1.96531 8 h after light 0.820377 0.810968 0.829786 12 h after light 1.688905 1.56123 1.81658 4 h after dark 4.213760000000001 3.40008 5.02744 8 h after dark 3.09782 2.72334 3.4723 12 h after dark 2.12331 2.07876 2.16786