condition mean min max 4 h after light 4.4111 4.375769999999999 4.43499 8 h after light 4.463866666666667 4.414630000000001 4.52787 12 h after light 4.59689 4.4511199999999995 4.8471 4 h after dark 4.513003333333333 4.3562 4.816409999999999 8 h after dark 4.41575 4.34604 4.54115 12 h after dark 4.316293333333333 4.2630300000000005 4.41258