31.   The quality of treatment varies from prison to prison and state to state, often depending on whether court actions have forced improved medical care.

32.   The quality varies depending on the nature of the auditorium and the type of performance.

33.   The quality varies greatly, from relatively polished to high school art-class look.

34.   The quality varies, but to dramatic effect, she says.

35.   Their quality varies widely.

36.   Their quality varies.

37.   Understandably, the quality varied from transient reports resting between hard covers to powerful first-hand accounts enhanced by an enlarging vision.

38.   Variance is a statistical measure of how widely a quality varies in a population.

39.   Water quality can vary among brands.

40.   Webcams have become incredibly inexpensive and are much easier to set up and use, though the image quality they offer varies dramatically.