condition mean min max 4 h after light 2431.709541 909.942562 3953.47652 8 h after light 787.7894385 421.757165 1153.821712 12 h after light 994.6282035 427.484428 1561.771979 4 h after dark 3122.937455 967.924364 5277.950546 8 h after dark 6699.726877499999 6610.990929 6788.462826 12 h after dark 6888.992735 6888.992735 6888.992735