condition mean min max 4 h after light 0.02223215 0.0 0.0444643 8 h after light 0.0 0.0 0.0 12 h after light 0.0219989 0.0 0.0439978 4 h after dark 0.0192281 0.0 0.0384562 8 h after dark 0.0 0.0 0.0 12 h after dark 0.015974 0.0 0.031948