[1] "site" "experiment" "length" "width" "height" 'data.frame': 12 obs. of 5 variables: $ site : int 1 1 1 2 2 2 3 3 3 4 ... $ experiment: int 1 2 3 1 2 3 1 2 3 1 ... $ length : num 2.2 2.1 2.7 3 3.1 2.5 1.9 1.1 3.5 2.9 ... $ width : num 1.3 2.2 1.5 4.5 3.1 2.8 1.8 0.5 2 2.7 ... $ height : num 9.6 7.6 2.2 1.5 4 3 4.5 2.3 7.5 3.2 ... site experiment length width height 1 1 1 2.2 1.3 9.6 2 1 2 2.1 2.2 7.6 3 1 3 2.7 1.5 2.2 4 2 1 3.0 4.5 1.5 5 2 2 3.1 3.1 4.0 6 2 3 2.5 2.8 3.0 length 1 2.2 2 2.1 3 2.7 4 3.0 5 3.1 6 2.5 7 1.9 8 1.1 9 3.5 10 2.9 11 4.5 12 1.2 site experiment 1 1 1 2 1 2 3 1 3 4 2 1 5 2 2 6 2 3 7 3 1 8 3 2 9 3 3 10 4 1 11 4 2 12 4 3 site experiment length width height 1 1 1 2.2 1.3 9.6 2 1 2 2.1 2.2 7.6 3 3 3 3.5 2.0 7.5 4 4 2 4.5 4.8 6.5 site experiment length width height volume 1 1 1 2.2 1.3 9.6 27.456 2 1 2 2.1 2.2 7.6 35.112 3 1 3 2.7 1.5 2.2 8.910 4 2 1 3.0 4.5 1.5 20.250 5 2 2 3.1 3.1 4.0 38.440 6 2 3 2.5 2.8 3.0 21.000 7 3 1 1.9 1.8 4.5 15.390 8 3 2 1.1 0.5 2.3 1.265 9 3 3 3.5 2.0 7.5 52.500 10 4 1 2.9 2.7 3.2 25.056 11 4 2 4.5 4.8 6.5 140.400 12 4 3 1.2 1.8 2.7 5.832