condition mean min max 4 h after light 8.543330999999998 8.417601 8.669061 8 h after light 8.621461 8.573861 8.669061 12 h after light 8.475137 7.203708 9.746566 4 h after dark 8.679953000000001 7.840145 9.519761 8 h after dark 8.6202525 8.571444 8.669061 12 h after dark 9.924114 9.924114 9.924114