condition mean min max 4 h after light 5.66608 5.27924 6.05292 8 h after light 5.2283 5.12331 5.33329 12 h after light 5.206175 4.3324 6.07995 4 h after dark 11.5079 10.7789 12.4566 8 h after dark 8.50361 8.16387 8.82798 12 h after dark 10.304246666666666 9.18954 11.4376