condition mean min max 4 h after light 4.136565 3.8309 4.44223 8 h after light 3.0960099999999997 2.90008 3.29194 12 h after light 4.4337 4.26395 4.60345 4 h after dark 6.858756666666666 6.64801 7.15156 8 h after dark 5.762543333333333 5.50099 5.92352 12 h after dark 4.3107500000000005 3.70009 4.67168