2 (def purchases
(list 0 2 5 0 3 1 8 0 3 1 1 9 2 4 0 2 9 3 0 1 9 8))
5 (def precipitation
(list .77 1.74 .81 1.20 1.95 1.20 .47 1.43 3.37 2.20 3.30 3.09 1.51 2.10 .52 1.62 1.31 .32 .59 .81 2.81 1.87 1.18 1.35 4.75 2.48 .96 1.89 .90 2.05))
7 (def urban
(list 184 196 217 284 184 236 189 206 179 170 205 190 204 330 217 242 222 242 249 241))
8 (def rural
(list 166 146 144 204 158 143 158 180 223 194 194 175 171 155 143 145 131 181 148 144 220 129))
11 (def hc
'(.5 .46 .41 .44 .72 .83 .38 .60 .83 .34 .37 .87 .65 .48 .51 .47 .56 .51 .57 .36 .52 .58 .47 .65 .41 .39 .55 .64 .38 .50 .73 .57 .41 1.02 1.10 .43 .41 .41 .52 .70 .52 .51 .49 .61 .46 .55))
12 (def co
'(5.01
8.60 4.95 7.51 14.59 11.53 5.21 9.62 15.13 3.95 4.12 19.00 11.20 3.45 4.10 4.74 5.36 5.69 6.02 2.03 6.78 6.02 5.22 14.67 4.42 7.24 12.30 7.98 4.10 12.10 14.97 5.04 3.38 23.53 22.92 3.81 1.85 2.26 4.29 14.93 6.35 5.79 4.62 8.43 3.99 7.47))
15 (def iron
(list 61 175 111 124 130 173 169 169 160 224 257 333 199))
16 (def aluminum
(list 13 21 24 23 64 38 33 61 39 71 112 88 54))
17 (def absorption
(list 4 18 14 18 26 26 21 30 28 36 65 62 40))
19 (def strength
(list 14.7 48.0 25.6 10.0 16.0 16.8 20.7 38.8 16.9 27.0 16.0 24.9 7.3 12.8))
20 (def depth
(list 8.9 36.6 36.8 6.1 6.9 6.9 7.3 8.4 6.5 8.0 4.5 9.9 2.9 2.0))
21 (def water
(list 31.5 27.0 25.9 39.1 39.2 38.3 33.9 33.8 27.9 33.1 26.3 37.8 34.6 36.4))
24 (def hardness
(list 45 55 61 66 71 71 81 86 53 60 64 68 79 81 56 68 75 83 88 59 71 80 82 89 51 59 65 74 81 86))
25 (def tensile-strength
(list 162 233 232 231 231 237 224 219 203 189 210 210 196 180 200 173 188 161 119 161 151 165 151 128 161 146 148 144 134 127))
26 (def abrasion-loss
(list 372 206 175 154 136 112 55 45 221 166 164 113 82 32 228 196 128 97 64 249 219 186 155 114 341 340 284 267 215 148))
28 (def yield
(list 7.9 9.2 10.5 11.2 12.8 13.3 12.1 12.6 14.0 9.1 10.8 12.5 8.1 8.6 10.1 11.5 12.7 13.7 13.7 14.4 15.5 11.3 12.5 14.5 15.3 16.1 17.5 16.6 18.5 19.2 18.0 20.8 21 17.2 18.4 18.9 ))
29 (def density
(list 1 1 1 2 2 2 3 3 3 4 4 4 1 1 1 2 2 2 3 3 3 4 4 4 1 1 1 2 2 2 3 3 3 4 4 4))
30 (def variety
(list 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 3 3))
33 (def travel-space
(list 12.8 12.9 12.9 13.6 14.5 14.6 15.1 17.5 19.5 20.8))
34 (def separation
(list 5.5 6.2 6.3 7.0 7.8 8.3 7.1 10.0 10.8 11.0))