condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 6.7269 0.0 13.4538 8 h after light 6.5001 0.0 13.0002 4 h after dark 4.48470105 0.0992721 8.87013 8 h after dark 0.3011665 0.0 0.602333 12 h after dark 0.0 0.0 0.0