condition mean min max 0 h after light 7.768865 7.48256 8.05517 2 h after light 10.30694 9.54018 11.0737 4 h after light 6.36388 6.33446 6.3933 8 h after light 5.171275 5.0738 5.26875 12 h after light 7.55455 7.34434 7.76476 2 h after dark 7.7080850000000005 6.66229 8.75388 4 h after dark 7.434175 6.04758 8.82077 8 h after dark 8.72391 8.22488 9.22294 12 h after dark 8.13492 5.44584 10.824