Temperatures in degrees Farenheit when the chirps were counted:

89
72
93
84
81
75
70
82
69
83
80
83
81
84
76

Numbers of cricket chirps in 15 seconds:

20
16
20
18
17
16
15
17
15
16
15
17
16
17
14

This data is taken from "key problem 1", a web page made available by the Office for Mathematics, Science, and Technology Education at the University of Illinois at Urbana/Champaign. It is retyped here for ease in entering into a spreadsheet. See their website, http://www.mste.uiuc.edu, for other interesting things.