dataset=insulation
begin description
data from  Elizabeth Spector
A box with insulation was heated for 20 minutes then allowed
to cool down. Temp in middle of box taken at time 0, 5, ..., 40
Type 1 = no insulation, 2 = corn pith, 3 = fiberglass, 4 = styrofoam and 
5 = bubbles used.
Measurements are averages of ten trials. Starting temperatures are
close but not exactly equal.
end description
begin variables
col 0 = type
col 1 = time
col 2 = y = temp
end variables
begin data
1  0  21.79
1  5  24.36
1  10 27.42
1  15 29.12
1  20 29.98
1  25 28.28
1  30 25.67
1  35 23.93
1  40 23.1
2  0  21.18
2  5  22.33
2  10 24.41
2  15 26.01
2  20 27.09
2  25 26.75
2  30 25.29
2  35 24.17
2  40 23.25
3  0  21.7
3  5  22.59
3  10 24.5
3  15 26.0
3  20 27.29
3  25 27.02
3  30 25.74
3  35 24.58
3  40 23.39
4  0  21.57
4  5  22.26
4  10 24.46
4  15 26.2
4  20 27.52
4  25 27.57
4  30 25.85
4  35 24.52
4  40 23.49
5  0  21.51
5  5  22.69
5  10 25.3
5  15 27.09
5  20 28.24
5  25 27.65
5  30 25.55
5  35 24.09
5  40 23.23