Two researchers measured the pH (a scale on which a value of 7 is neutral and values below 7 are acidic) of water collected from rain and snow over a 6-month period in Allegheny County, Pennsylvania. Describe their data with a graph and a few sentences:

4.57 5.62 4.12 5.29 4.64 4.31 4.30 4.39 4.45 5.67 4.39 4.52 4.26 4.26 4.40 5.78 4.73 4.56 5.08 4.41 4.12 5.51 4.82 4.63 4.29 4.60