condition mean min max 0 h after light 0.087076 0.0 0.174152 2 h after light 0.0908115 0.0 0.181623 4 h after light 0.3229465 0.317148 0.328745 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0