condition mean min max 2 h after light 1.4916243333333334 0.968486 2.17592 6 h after light 1.8699478333333335 0.840917 2.73287 10 h after light 1.0318331666666667 0.240895 1.77941 14 h after light 1.134109 0.266821 1.77818 18 h after light 1.617054 0.299499 2.50376 2 h after dark 1.8817293333333334 0.555956 2.7791