condition mean min max 4 h after light 5.189183333333333 4.95559 5.52459 8 h after light 5.18489 4.8461300000000005 5.676159999999999 12 h after light 5.11485 4.75411 5.6169400000000005 4 h after dark 4.9732433333333335 4.76847 5.13772 8 h after dark 5.17759 4.61072 5.806690000000001 12 h after dark 5.086116666666666 4.88281 5.39136