condition mean min max 4 h after light 1.578993 0.777479 2.29034 8 h after light 1.3108659999999999 0.396968 2.20462 12 h after light 1.806375 0.877325 2.6333 4 h after dark 2.16599 1.30933 2.74353 8 h after dark 2.14045 1.50276 2.91311 12 h after dark 1.4927833333333334 1.29244 1.6094