condition mean min max 4 h after light 1.40951 1.3266 1.49242 8 h after light 0.9678249999999999 0.957251 0.978399 12 h after light 1.539505 1.50995 1.56906 4 h after dark 4.46169 3.46452 5.45886 8 h after dark 2.53411 2.18308 2.88514 12 h after dark 2.1455200000000003 1.99003 2.30101