condition mean min max 4 h after light 2.267755 1.20609 3.32942 8 h after light 1.967695 1.58424 2.35115 12 h after light 1.747515 1.66476 1.83027 4 h after dark 2.323735 2.17929 2.46818 8 h after dark 1.8255500000000002 1.54383 2.10727 12 h after dark 2.2702150000000003 2.24033 2.3001