condition mean min max 4 h after light 2.01563 1.89426 2.137 8 h after light 1.9169049999999999 1.73139 2.10242 12 h after light 1.762385 1.72033 1.80444 4 h after dark 1.7585800000000003 1.24998 2.26718 8 h after dark 2.07218 1.95851 2.18585 12 h after dark 2.599665 2.35436 2.84497