condition mean min max 3 h after light 0.138187 0.0 0.414561 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.264728 0.0 0.470657 3 h after dark 0.0 0.0 0.0 6 h after dark 0.12842633333333334 0.0 0.385279 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0