condition mean min max 0 h after light 7.03631 6.97239 7.10023 2 h after light 4.61373 3.30361 5.92385 4 h after light 3.897055 3.63797 4.15614 8 h after light 5.390125 5.35181 5.42844 12 h after light 8.51321 8.42222 8.6042 2 h after dark 9.7015 9.70024 9.70276 4 h after dark 10.56595 10.3237 10.8082 8 h after dark 10.50165 10.0679 10.9354 12 h after dark 9.19004 8.5139 9.86618