condition mean min max 2 h after light 0.9661690000000001 0.717681 1.13083 6 h after light 0.596579 0.110859 0.830032 10 h after light 0.8237415 0.521449 1.01245 14 h after light 0.8466021666666667 0.648087 1.27345 18 h after light 0.9901388333333333 0.787344 1.28633 2 h after dark 0.5460576666666667 0.241079 0.827393