Although no computer readable data files come with Oehlert's book, they are available from the publishers web site in the form of Windows Zip and Macintosh Sit archive files. These contain text forms of data sets used in the book. I have retrieved and unpacked these archives and made the files available in three forms:
In addition, you can download compressed archive files containing all three types of files.
The individual files and data sets in the combined files follow a simple naming scheme:
Note that these are not legal names for MacAnova variables (they include a period). This only matters in the files readable by read() and matread(). One useful convention is to substitute '_' for '.' in the names. See below for an example.
All the files are available under two names: XXXXXX.dat (for example, OeCh02.dat or ex3.2.dat) and XXXXXX.dat.txt (for example, OeCh02.dat.txt or ex3.2.dat.txt). The latter name is an attempt to overcome the problem some browsers have properly downloading text files without the suffix .txt.
Here is what file ex3.3.dat looks like.
1 80.5 1 79.3 1 79.0 2 89.1 2 75.7 2 81.2 3 77.8 3 79.5 3 77.0 4 76.7 4 77.2 4 78.6
Here is the description in file ex3.3.inf:
A data set from Oehlert (2000) \emph{A First Course in Design and Analysis of Experiments}, New York: W. H. Freeman. Data originally from Caro, M.~R., E.~Zamora, L.~Leon, F.~Cuello, J.~Salinas, D.~Megias, M.~J. Cubero, and A.~Contreras (1990). ``Isolation and identification of {\em Listeria monocytogenes\/} in vegetable byproduct silages containing preservative additives and destined for animal feeding.'' {\em Animal Feed Science and Technology\/}~{\em 31}, 285--291. Moisture content of orange pulp silage subjected to four treatments. Column 1 is treatment (1 through 4 indicates NaCl, formic acid, beet pulp, and control). Column 2 is moisture content.
Here we use readdata() (on a Macintosh) to read the columns in the data files in to MacAnova vectors treatment and moisture, then turn treatment into a factor (categorical variable) and finally do an analysis of variance.
Cmd> readdata("",treatment,moisture) # creates vectors treatment, moisture Read from file "KB1:5303:Data:Ch03:ex3.3.dat" Column 1 saved as REAL vector treatment Column 2 saved as REAL vector moisture Cmd> treatment <- factor(treatment) # make treatment a factor (categorical variable) Cmd> list(treatment,moisture) # see what we've got moisture REAL 12 treatment REAL 12 FACTOR with 4 levels Cmd> anova("moisture=treatment",fstat:T) # Analysis of variance Model used is moisture=treatment DF SS MS F P-value CONSTANT 1 75462 75462 6210.85432 > 1e-08 treatment 3 36.18 12.06 0.99259 0.44402 ERROR1 8 97.2 12.15
Here is what the data set looks like in a file with many data sets such as OeCh03.dat (or OeCh03.dat.txt):
ex3.3 12 2 ) A data set from Oehlert (2000) \emph{A First Course in Design and ) Analysis of Experiments}, New York: W. H. Freeman. ) ) Data originally from Caro, M.~R., E.~Zamora, L.~Leon, F.~Cuello, ) J.~Salinas, D.~Megias, M.~J. Cubero, and A.~Contreras (1990). ) ``Isolation and identification of {\em Listeria monocytogenes\/} ) in vegetable byproduct silages containing preservative additives ) and destined for animal feeding.'' {\em Animal Feed Science and ) Technology\/}~{\em 31}, 285--291. ) ) Exercise 3.3, p. 61 ) Moisture content of orange pulp silage subjected to ) four treatments. Column 1 is treatment (1 through 4 ) indicates NaCl, formic acid, beet pulp, and control). ) Column 2 is moisture content. 1 80.5 1 79.3 1 79.0 2 89.1 2 75.7 2 81.2 3 77.8 3 79.5 3 77.0 4 76.7 4 77.2 4 78.6
Since the data set name in the file contain a period which is not legal in MacAnova variable names, you must select a new name. Here I substitute '_' for '.'. You can use matread() in place of read().
Cmd> ex3_3 <- read("","ex3.3") # or ex3_3 <= matread("","ex3.3") ex3.3 12 2 ) A data set from Oehlert (2000) \emph{A First Course in Design and ) Analysis of Experiments}, New York: W. H. Freeman. ) ) Data originally from Caro, M.~R., E.~Zamora, L.~Leon, F.~Cuello, ) J.~Salinas, D.~Megias, M.~J. Cubero, and A.~Contreras (1990). ) ``Isolation and identification of {\em Listeria monocytogenes\/} ) in vegetable byproduct silages containing preservative additives ) and destined for animal feeding.'' {\em Animal Feed Science and ) Technology\/}~{\em 31}, 285--291. ) ) Exercise 3.3, p. 61 ) Moisture content of orange pulp silage subjected to ) four treatments. Column 1 is treatment (1 through 4 ) indicates NaCl, formic acid, beet pulp, and control). ) Column 2 is moisture content. Read from file "KB1:stat5303:data:OeCh03.dat" Cmd> #Note the descriptive comments were listed. They can be suppressed Cmd> # if you use ex3_3 <- read("","ex3.3",quiet:T) Cmd> list(ex3_3) # it's a 12 by 2 matrix ex3_3 REAL 12 2 Cmd> ex3_3 # here's the data (1,1) 1 80.5 (2,1) 1 79.3 (3,1) 1 79 (4,1) 2 89.1 (5,1) 2 75.7 (6,1) 2 81.2 (7,1) 3 77.8 (8,1) 3 79.5 (9,1) 3 77 (10,1) 4 76.7 (11,1) 4 77.2 (12,1) 4 78.6 Cmd> makecols(ex3_3,treatment,moisture) # split it into columns Cmd> treatment <- factor(treatment) Cmd> list(treatment,moisture) moisture REAL 12 treatment REAL 12 FACTOR with 4 levels Cmd> anova("moisture=treatment",fstat:T) Model used is moisture=treatment DF SS MS F P-value CONSTANT 1 75462 75462 6210.85432 > 1e-08 treatment 3 36.18 12.06 0.99259 0.44402 ERROR1 8 97.2 12.15
These are grouped by chapter:
The file names used are slightly different from those in the publisher's archive files. They have been changed to match the data set names in the combined files. For example, file ex3-3.dat became ex3.3.dat.
Chapter 2 files
exmpl2.1.dat
or exmpl2.1.dat.txt
(runstitching time data, information in exmpl2.1.inf
or exmpl2.1.inf.txt)
exmpl2.2.dat
or exmpl2.2.dat.txt
(phosphorus absorption data, information in exmpl2.2.inf
or exmpl2.2.inf.txt)
ex2.1.dat
or ex2.1.dat.txt
(book ratings, information in ex2.1.inf
or ex2.1.inf.txt)
ex2.2.dat
or ex2.2.dat.txt
(pregnant cows, information in ex2.2.inf
or ex2.2.inf.txt)
ex2.4.dat
or ex2.4.dat.txt
(artificial wetlands, information in ex2.4.inf
or ex2.4.inf.txt)
ex2.5.dat
or ex2.5.dat.txt
(cockroaches, information in ex2.5.inf
or ex2.5.inf.txt)
pr2.1.dat
or pr2.1.dat.txt
(Visiplume, information in pr2.1.inf
or pr2.1.inf.txt)
Chapter 3 files
exmpl3.2.dat
or exmpl3.2.dat.txt
(resin lifetimes, information in exmpl3.2.inf
or exmpl3.2.inf.txt)
ex3.1.dat
or ex3.1.dat.txt
(rat liver weights, information in ex3.1.inf
or ex3.1.inf.txt)
ex3.3.dat
or ex3.3.dat.txt
(orange pulp silage, information in ex3.3.inf
or ex3.3.inf.txt)
ex3.5.dat
or ex3.5.dat.txt
(leaf angles, information in ex3.5.inf
or ex3.5.inf.txt)
pr3.1.dat
or pr3.1.dat.txt
(solder joints, information in pr3.1.inf
or pr3.1.inf.txt)
pr3.2.dat
or pr3.2.dat.txt
(fruit fly longevity, information in pr3.2.inf
or pr3.2.inf.txt)
pr3.3.dat
or pr3.3.dat.txt
(alpine meadows, information in pr3.3.inf
or pr3.3.inf.txt)
pr3.4.dat
or pr3.4.dat.txt
(caffeine/adenine, information in pr3.4.inf
or pr3.4.inf.txt)
pr3.5.dat
or pr3.5.dat.txt
(polypropylene fibers, information in pr3.5.inf
or pr3.5.inf.txt)
Chapter 5 files
exmpl5.5.dat
or exmpl5.5.dat.txt
(amino acids in cheese, information in exmpl5.5.inf
or exmpl5.5.inf.txt)
exmpl5.10.dat
or exmpl5.10.dat.txt
(weed control in soybeans, information in exmpl5.10.inf
or exmpl5.10.inf.txt)
Chapter 6 files
exmpl6.1.dat
or exmpl6.1.dat.txt
(cloud seeding data, information in exmpl6.1.inf
or exmpl6.1.inf.txt)
exmpl6.3.dat
or exmpl6.3.dat.txt
(thermocouple temperature differences, information in exmpl6.3.inf
or exmpl6.3.inf.txt)
exmpl6.4.dat
or exmpl6.4.dat.txt
(IC wafer defects, information in exmpl6.4.inf
or exmpl6.4.inf.txt)
ex6.1.dat
or ex6.1.dat.txt
(melatonin, information in ex6.1.inf
or ex6.1.inf.txt)
ex6.2.dat
or ex6.2.dat.txt
(bacterial counts in milk, information in ex6.2.inf
or ex6.2.inf.txt)
ex6.3.dat
or ex6.3.dat.txt
(cardiac relaxants, information in ex6.3.inf
or ex6.3.inf.txt)
ex6.4.dat
or ex6.4.dat.txt
(breakage rates, information in ex6.4.inf
or ex6.4.inf.txt)
ex6.6.dat
or ex6.6.dat.txt
(Visiplume, information in ex6.6.inf
or ex6.6.inf.txt)
pr6.1.dat
or pr6.1.dat.txt
(grassland competition, information in pr6.1.inf
or pr6.1.inf.txt)
Chapter 8 files
exmpl8.2.dat
or exmpl8.2.dat.txt
(rat liver iron, information in exmpl8.2.inf
or exmpl8.2.inf.txt)
exmpl8.4.dat
or exmpl8.4.dat.txt
(chick weights, information in exmpl8.4.inf
or exmpl8.4.inf.txt)
exmpl8.5.dat
or exmpl8.5.dat.txt
(zinc retention, information in exmpl8.5.inf
or exmpl8.5.inf.txt)
exmpl8.6.dat
or exmpl8.6.dat.txt
(nonstarter bacteria, information in exmpl8.6.inf
or exmpl8.6.inf.txt)
exmpl8.8.dat
or exmpl8.8.dat.txt
(page faults, information in exmpl8.8.inf
or exmpl8.8.inf.txt)
exmpl8.9.dat
or exmpl8.9.dat.txt
(unequal weights, information in exmpl8.9.inf
or exmpl8.9.inf.txt)
exmpl8.10.dat
or exmpl8.10.dat.txt
(amylase activity, information in exmpl8.10.inf
or exmpl8.10.inf.txt)
ex8.1.dat
or ex8.1.dat.txt
(diets and weight gain, information in ex8.1.inf
or ex8.1.inf.txt)
ex8.2.dat
or ex8.2.dat.txt
(FAN in rice malt, information in ex8.2.inf
or ex8.2.inf.txt)
pr8.1.dat
or pr8.1.dat.txt
(germinating barley, information in pr8.1.inf
or pr8.1.inf.txt)
pr8.2.dat
or pr8.2.dat.txt
(particleboard density, information in pr8.2.inf
or pr8.2.inf.txt)
pr8.4.dat
or pr8.4.dat.txt
(delaminating pacemakers, information in pr8.4.inf
or pr8.4.inf.txt)
pr8.5.dat
or pr8.5.dat.txt
(pine oleoresin, information in pr8.5.inf
or pr8.5.inf.txt)
pr8.6.dat
or pr8.6.dat.txt
(tropical grasses, information in pr8.6.inf
or pr8.6.inf.txt)
pr8.7.dat
or pr8.7.dat.txt
(sagebrush, information in pr8.7.inf
or pr8.7.inf.txt)
Chapter 9 files
exmpl9.2.dat
or exmpl9.2.dat.txt
(one-cell interaction, information in exmpl9.2.inf
or exmpl9.2.inf.txt)
pr9.1.dat
or pr9.1.dat.txt
(fat acidity, information in pr9.1.inf
or pr9.1.inf.txt)
pr9.2.dat
or pr9.2.dat.txt
(frozen chicken semen, information in pr9.2.inf
or pr9.2.inf.txt)
pr9.5.dat
or pr9.5.dat.txt
(cisplatin, information in pr9.5.inf
or pr9.5.inf.txt)
pr9.6.dat
or pr9.6.dat.txt
(gel strength, information in pr9.6.inf
or pr9.6.inf.txt)
Chapter 10 files
exmpl10.1.dat
or exmpl10.1.dat.txt
(unbalanced amylase, information in exmpl10.1.inf
or exmpl10.1.inf.txt)
exmpl10.3.dat
or exmpl10.3.dat.txt
(highly unbalanced data, information in exmpl10.3.inf
or exmpl10.3.inf.txt)
exmpl10.8.dat
or exmpl10.8.dat.txt
(seed maturation, information in exmpl10.8.inf
or exmpl10.8.inf.txt)
ex10.2.dat
or ex10.2.dat.txt
(single replicate of 2^4, information in ex10.2.inf
or ex10.2.inf.txt)
pr10.1.dat
or pr10.1.dat.txt
(Verapamil, information in pr10.1.inf
or pr10.1.inf.txt)
pr10.2.dat
or pr10.2.dat.txt
(yogurt survey, information in pr10.2.inf
or pr10.2.inf.txt)
pr10.3.dat
or pr10.3.dat.txt
(ice cream ratings, information in pr10.3.inf
or pr10.3.inf.txt)
pr10.4.dat
or pr10.4.dat.txt
(water binding of gums, information in pr10.4.inf
or pr10.4.inf.txt)
pr10.5.dat
or pr10.5.dat.txt
(wheat air cells, information in pr10.5.inf
or pr10.5.inf.txt)
pr10.6.dat
or pr10.6.dat.txt
(GABA and anticonvulsants, information in pr10.6.inf
or pr10.6.inf.txt)
pr10.7.dat
or pr10.7.dat.txt
(patient confidentiality, information in pr10.7.inf
or pr10.7.inf.txt)
pr10.8.dat
or pr10.8.dat.txt
(leucine in pigs, information in pr10.8.inf
or pr10.8.inf.txt)
Chapter 11 files
exmpl11.2.dat
or exmpl11.2.dat.txt
(carton experiment 3, information in exmpl11.2.inf
or exmpl11.2.inf.txt)
ex11.2.dat
or ex11.2.dat.txt
(daily weight gain, information in ex11.2.inf
or ex11.2.inf.txt)
ex11.3.dat
or ex11.3.dat.txt
(tire wear, information in ex11.3.inf
or ex11.3.inf.txt)
ex11.4.dat
or ex11.4.dat.txt
(vegetable oil, information in ex11.4.inf
or ex11.4.inf.txt)
pr11.2.dat
or pr11.2.dat.txt
(bacterial in milk, information in pr11.2.inf
or pr11.2.inf.txt)
pr11.3.dat
or pr11.3.dat.txt
(composite materials, information in pr11.3.inf
or pr11.3.inf.txt)
Chapter 12 files
pr12.2.dat
or pr12.2.dat.txt
(dental fillings, information in pr12.2.inf
or pr12.2.inf.txt)
pr12.6.dat
or pr12.6.dat.txt
(bacteria in milk, information in pr12.6.inf
or pr12.6.inf.txt)
pr12.7.dat
or pr12.7.dat.txt
(free amino acids in cheese, information in pr12.7.inf
or pr12.7.inf.txt)
pr12.8.dat
or pr12.8.dat.txt
(expectorated beer, information in pr12.8.inf
or pr12.8.inf.txt)
Chapter 13 files
exmpl13.1.dat
or exmpl13.1.dat.txt
(mealy bugs, information in exmpl13.1.inf
or exmpl13.1.inf.txt)
exmpl13.6.dat
or exmpl13.6.dat.txt
(bioequivalence, information in exmpl13.6.inf
or exmpl13.6.inf.txt)
exmpl13.10.dat
or exmpl13.10.dat.txt
(bioequivalence, complete data, information in exmpl13.10.inf
or exmpl13.10.inf.txt)
exmpl13.12.dat
or exmpl13.12.dat.txt
(milk production, information in exmpl13.12.inf
or exmpl13.12.inf.txt)
ex13.1.dat
or ex13.1.dat.txt
(cracks in pavements, information in ex13.1.inf
or ex13.1.inf.txt)
ex13.2.dat
or ex13.2.dat.txt
(dried fruit pulp, information in ex13.2.inf
or ex13.2.inf.txt)
ex13.3.dat
or ex13.3.dat.txt
(replicated LS, information in ex13.3.inf
or ex13.3.inf.txt)
ex13.5.dat
or ex13.5.dat.txt
(disk drive substrates, information in ex13.5.inf
or ex13.5.inf.txt)
pr13.4.dat
or pr13.4.dat.txt
(work baskets, information in pr13.4.inf
or pr13.4.inf.txt)
pr13.5.dat
or pr13.5.dat.txt
(soybean rotations, information in pr13.5.inf
or pr13.5.inf.txt)
pr13.6.dat
or pr13.6.dat.txt
(soybeans and weeds, information in pr13.6.inf
or pr13.6.inf.txt)
pr13.7.dat
or pr13.7.dat.txt
(cytokinin, information in pr13.7.inf
or pr13.7.inf.txt)
pr13.8.dat
or pr13.8.dat.txt
(rocket errors, information in pr13.8.inf
or pr13.8.inf.txt)
pr13.9.dat
or pr13.9.dat.txt
(alfalfa meal and turkeys, information in pr13.9.inf
or pr13.9.inf.txt)
pr13.10.dat
or pr13.10.dat.txt
(laminate lengths, information in pr13.10.inf
or pr13.10.inf.txt)
pr13.11.dat
or pr13.11.dat.txt
(pine oleoresin, information in pr13.11.inf
or pr13.11.inf.txt)
pr13.12.dat
or pr13.12.dat.txt
(growth hormones, information in pr13.12.inf
or pr13.12.inf.txt)
pr13.13.dat
or pr13.13.dat.txt
(coffee in the shade, information in pr13.13.inf
or pr13.13.inf.txt)
pr13.14.dat
or pr13.14.dat.txt
(potato chips, information in pr13.14.inf
or pr13.14.inf.txt)
Chapter 14 files
exmpl14.2.dat
or exmpl14.2.dat.txt
(dish detergent, information in exmpl14.2.inf
or exmpl14.2.inf.txt)
exmpl14.5.dat
or exmpl14.5.dat.txt
(lithium concentrations, information in exmpl14.5.inf
or exmpl14.5.inf.txt)
ex14.1.dat
or ex14.1.dat.txt
(generic data, information in ex14.1.inf
or ex14.1.inf.txt)
ex14.4.dat
or ex14.4.dat.txt
(access times, information in ex14.4.inf
or ex14.4.inf.txt)
pr14.1.dat
or pr14.1.dat.txt
(Japanese beetles, information in pr14.1.inf
or pr14.1.inf.txt)
pr14.2.dat
or pr14.2.dat.txt
(milk filtration, information in pr14.2.inf
or pr14.2.inf.txt)
pr14.3.dat
or pr14.3.dat.txt
(basic skills graders, information in pr14.3.inf
or pr14.3.inf.txt)
pr14.4.dat
or pr14.4.dat.txt
(clothes softness, information in pr14.4.inf
or pr14.4.inf.txt)
Chapter 15 files
exmpl15.6.dat
or exmpl15.6.dat.txt
(visual perception, information in exmpl15.6.inf
or exmpl15.6.inf.txt)
exmpl15.7.dat
or exmpl15.7.dat.txt
(milk chiller, information in exmpl15.7.inf
or exmpl15.7.inf.txt)
pr15.4.dat
or pr15.4.dat.txt
(odor perception, information in pr15.4.inf
or pr15.4.inf.txt)
pr15.5.dat
or pr15.5.dat.txt
(Eurasian water milfoil, information in pr15.5.inf
or pr15.5.inf.txt)
pr15.6.dat
or pr15.6.dat.txt
(yogurt shelf life, information in pr15.6.inf
or pr15.6.inf.txt)
Chapter 16 files
exmpl16.5.dat
or exmpl16.5.dat.txt
(anxiety/tension, information in exmpl16.5.inf
or exmpl16.5.inf.txt)
exmpl16.7.dat
or exmpl16.7.dat.txt
(weed biomass, information in exmpl16.7.inf
or exmpl16.7.inf.txt)
pr16.3.dat
or pr16.3.dat.txt
(aerially sprayed pesticide, information in pr16.3.inf
or pr16.3.inf.txt)
pr16.4.dat
or pr16.4.dat.txt
(calculus exams, information in pr16.4.inf
or pr16.4.inf.txt)
pr16.5.dat
or pr16.5.dat.txt
(long-distance companies, information in pr16.5.inf
or pr16.5.inf.txt)
pr16.8.dat
or pr16.8.dat.txt
(metered ramps, information in pr16.8.inf
or pr16.8.inf.txt)
pr16.9.dat
or pr16.9.dat.txt
(laundry detergents, information in pr16.9.inf
or pr16.9.inf.txt)
pr16.13.dat
or pr16.13.dat.txt
(perch and ruffe, information in pr16.13.inf
or pr16.13.inf.txt)
Chapter 17 files
exmpl17.2.dat
or exmpl17.2.dat.txt
(keyboarding pain, information in exmpl17.2.inf
or exmpl17.2.inf.txt)
pr17.1.dat
or pr17.1.dat.txt
(bird bones, information in pr17.1.inf
or pr17.1.inf.txt)
pr17.4.dat
or pr17.4.dat.txt
(purchase likelihood, information in pr17.4.inf
or pr17.4.inf.txt)
pr17.5.dat
or pr17.5.dat.txt
(mercury in soil, information in pr17.5.inf
or pr17.5.inf.txt)
Chapter 18 files
exmpl18.3.dat
or exmpl18.3.dat.txt
(welding strength, information in exmpl18.3.inf
or exmpl18.3.inf.txt)
exmpl18.7.dat
or exmpl18.7.dat.txt
(leaf springs, information in exmpl18.7.inf
or exmpl18.7.inf.txt)
pr18.4.dat
or pr18.4.dat.txt
(speedometer cable, information in pr18.4.inf
or pr18.4.inf.txt)
pr18.5.dat
or pr18.5.dat.txt
(car seats, corrected, information in pr18.5.inf
or pr18.5.inf.txt)
pr18.6.dat
or pr18.6.dat.txt
(silicon thickness, information in pr18.6.inf
or pr18.6.inf.txt)
pr18.7.dat
or pr18.7.dat.txt
(car seat variances, information in pr18.7.inf
or pr18.7.inf.txt)
pr18.8.dat
or pr18.8.dat.txt
(two-series with target, information in pr18.8.inf
or pr18.8.inf.txt)
pr18.9.dat
or pr18.9.dat.txt
(another two-series with target, information in pr18.9.inf
or pr18.9.inf.txt)
pr18.11.dat
or pr18.11.dat.txt
(icings, information in pr18.11.inf
or pr18.11.inf.txt)
Chapter 19 files
exmpl19.1.dat
or exmpl19.1.dat.txt
(cake baking first order, information in exmpl19.1.inf
or exmpl19.1.inf.txt)
exmpl19.3.dat
or exmpl19.3.dat.txt
(cake baking second order, information in exmpl19.3.inf
or exmpl19.3.inf.txt)
exmpl19.5.dat
or exmpl19.5.dat.txt
(fruit punch, information in exmpl19.5.inf
or exmpl19.5.inf.txt)
exmpl19.6.dat
or exmpl19.6.dat.txt
(Harvey Wallbangers, information in exmpl19.6.inf
or exmpl19.6.inf.txt)
pr19.1.dat
or pr19.1.dat.txt
(rocket propellants, information in pr19.1.inf
or pr19.1.inf.txt)
pr19.2.dat
or pr19.2.dat.txt
(wheat mixtures, information in pr19.2.inf
or pr19.2.inf.txt)
pr19.3.dat
or pr19.3.dat.txt
(CO emissions, information in pr19.3.inf
or pr19.3.inf.txt)
pr19.5.dat
or pr19.5.dat.txt
(glue strength, information in pr19.5.inf
or pr19.5.inf.txt)
Oehlert.dat or Oehlert.dat.txt is a single file which contains all the data sets in OeCh02.dat, OeCh03.dat, OeCh05.dat, OeCh06.dat, OeCh08.dat, OeCh09.dat, OeCh10.dat, OeCh11.dat, OeCh12.dat, OeCh13.dat, OeCh14.dat, OeCh15.dat, OeCh16.dat, OeCh17.dat, OeCh18.dat, and OeCh19.dat.