condition mean min max 4 h after light 2.291405 2.27094 2.31187 8 h after light 3.105285 3.10423 3.10634 12 h after light 3.5123100000000003 3.50199 3.52263 4 h after dark 4.945425 4.94238 4.94847 8 h after dark 3.6778399999999998 3.6743 3.68138 12 h after dark 3.64052 3.58123 3.69981