condition mean min max 0 h after light 1.5918999999999999 1.06001 2.12379 4 h after light 2.199825 2.16013 2.23952 8 h after light 0.834813 0.770729 0.898897 4 h after dark 1.1927235 0.892337 1.49311 8 h after dark 1.27271 1.20317 1.34225 12 h after dark 1.571405 1.47932 1.66349