condition mean min max 4 h after light 5.7509266666666665 5.44189 6.0239 8 h after light 5.599903333333334 5.212000000000001 5.80189 12 h after light 5.83596 5.5361400000000005 6.24276 4 h after dark 5.9697700000000005 5.785880000000001 6.29599 8 h after dark 5.86418 5.325880000000001 6.42472 12 h after dark 5.801163333333333 5.428640000000001 6.18205