condition mean min max 4 h after light 9.48028 5.66234 12.5329 8 h after light 8.516186666666666 2.4939 13.6386 12 h after light 9.38408 5.48258 13.0263 4 h after dark 9.13461 6.81163 10.3673 8 h after dark 9.318793333333334 7.41551 11.3248 12 h after dark 12.081100000000001 11.5045 12.7725