diff --git a/R/ZimmermannTb4.4.R b/R/ZimmermannTb4.4.R
index 38e994e28c2d2cd55f241cc34e9567c457dd612b..6753969282b7739b689f52a8447605709e320228 100644
--- a/R/ZimmermannTb4.4.R
+++ b/R/ZimmermannTb4.4.R
@@ -1,5 +1,5 @@
 #' @name ZimmermannTb4.4
-#' @title Competição de cultivares de feijão
+#' @title Competição de Cultivares de Feijão
 #' @description Dados de um ensaio de competição de cultivares, em
 #'     blocos completos ao acaso, da produção de grãos de feijão em
 #'     kg/ha. O experimento teve quinze tratamentos (cultivares e/ou
@@ -8,8 +8,7 @@
 #'
 #' \describe{
 #'
-#' \item{\code{cult}}{Fator de níveis nominais. Cultivar do 
-#'     feijão.}
+#' \item{\code{cult}}{Fator de níveis nominais. Cultivar de feijão.}
 #'
 #' \item{\code{bloco}}{Número inteiro que identifica o bloco da
 #'     observação.}
@@ -29,14 +28,14 @@
 #'
 #' str(ZimmermannTb4.4)
 #'
-#' xyplot(prod ~ trat, data = ZimmermannTb4.4,
+#' xyplot(prod ~ cult, data = ZimmermannTb4.4,
 #'        groups = bloco, type = "o", jitter.x = TRUE,
 #'        xlab = "Cultivares",
 #'        ylab = expression("Produção de feijão"~(kg~ha^{-1})),
 #'        main = "Experimento de competição de cultivares",
 #'        scales = list(x = list(rot = 90)))
 #'
-#' aggregate(prod ~ trat, data = ZimmermannTb4.4,
+#' aggregate(prod ~ cult, data = ZimmermannTb4.4,
 #'           FUN = function(x) { c(mean = mean(x), var = var(x)) })
 #'
 NULL
diff --git a/data-raw/ZimmermannTab4.4.txt b/data-raw/ZimmermannTab4.4.txt
deleted file mode 100644
index 1b06d1e3668ad6ef88c40eb77245f25f58079d14..0000000000000000000000000000000000000000
--- a/data-raw/ZimmermannTab4.4.txt
+++ /dev/null
@@ -1,61 +0,0 @@
-"cult" "rep" "prod"
-1 1 1112.5
-2 1 1850
-3 1 987.5
-4 1 1587.5
-5 1 2012.5
-6 1 1975
-7 1 1837.5
-8 1 1825
-9 1 2250
-10 1 562.5
-11 1 1650
-12 1 1362.5
-13 1 1600
-14 1 2162.5
-15 1 2112.5
-1 2 650
-2 2 1637.5
-3 2 1537.5
-4 2 2412.5
-5 2 2075
-6 2 1787.5
-7 2 2137.5
-8 2 2100
-9 2 2062.5
-10 2 1437.5
-11 2 1625
-12 2 862.5
-13 2 1725
-14 2 1825
-15 2 2137.5
-1 3 1037.5
-2 3 1787.5
-3 3 1600
-4 3 2100
-5 3 2087.5
-6 3 2225
-7 3 2050
-8 3 1375
-9 3 1950
-10 3 1550
-11 3 1187.5
-12 3 1225
-13 3 1750
-14 3 1950
-15 3 2450
-1 4 1362.5
-2 4 1387.5
-3 4 1262.5
-4 4 1912.5
-5 4 1862.5
-6 4 1950
-7 4 2587.5
-8 4 1450
-9 4 1637
-10 4 925
-11 4 1325
-12 4 962.5
-13 4 1337.5
-14 4 1550
-15 4 2237.5
diff --git a/data-raw/ZimmermannTb4.4.txt b/data-raw/ZimmermannTb4.4.txt
index 654633b29a0955bb4fa05e3b3257ad9c5f5fbb5d..d674b087a9e84f22280fcb0ff802848a87446fb2 100644
--- a/data-raw/ZimmermannTb4.4.txt
+++ b/data-raw/ZimmermannTb4.4.txt
@@ -1,61 +1,61 @@
-trat	bloco	prod
-CNFP 8015	1	1112.5
-CNFP 8016	1	1850
-CNFP 8017	1	987.5
-CNFP 8018	1	1587.5
-CNFP 8019	1	2012.5
-CNFP 8020	1	1975
-CNFP 8021	1	1837.5
-CNFP 8022	1	1825
-CNFP 8023	1	2250
-CNFP 8024	1	562.5
-CNFP 8025	1	1650
-CNFP 8026	1	1362.5
-Diamante Negro	1	1600
-FT Nobre	1	2162.5
-G. Brilhante	1	2112.5
-CNFP 8015	2	650
-CNFP 8016	2	1637.5
-CNFP 8017	2	1537.5
-CNFP 8018	2	2412.5
-CNFP 8019	2	2075
-CNFP 8020	2	1787.5
-CNFP 8021	2	2137.5
-CNFP 8022	2	2100
-CNFP 8023	2	2062.5
-CNFP 8024	2	1437.5
-CNFP 8025	2	1625
-CNFP 8026	2	862.5
-Diamante Negro	2	1725
-FT Nobre	2	1825
-G. Brilhante	2	2137.5
-CNFP 8015	3	1037.5
-CNFP 8016	3	1787.5
-CNFP 8017	3	1600
-CNFP 8018	3	2100
-CNFP 8019	3	2087.5
-CNFP 8020	3	2225
-CNFP 8021	3	2050
-CNFP 8022	3	1375
-CNFP 8023	3	1950
-CNFP 8024	3	1550
-CNFP 8025	3	1187.5
-CNFP 8026	3	1225
-Diamante Negro	3	1750
-FT Nobre	3	1950
-G. Brilhante	3	2450
-CNFP 8015	4	1362.5
-CNFP 8016	4	1387.5
-CNFP 8017	4	1262.5
-CNFP 8018	4	1912.5
-CNFP 8019	4	1862.5
-CNFP 8020	4	1950
-CNFP 8021	4	2587.5
-CNFP 8022	4	1450
-CNFP 8023	4	1637
-CNFP 8024	4	925
-CNFP 8025	4	1325
-CNFP 8026	4	962.5
-Diamante Negro	4	1337.5
-FT Nobre	4	1550
-G. Brilhante	4	2237.5
+cult	bloco	prod
+1	1	1112.5
+2	1	1850
+3	1	987.5
+4	1	1587.5
+5	1	2012.5
+6	1	1975
+7	1	1837.5
+8	1	1825
+9	1	2250
+10	1	562.5
+11	1	1650
+12	1	1362.5
+13	1	1600
+14	1	2162.5
+15	1	2112.5
+1	2	650
+2	2	1637.5
+3	2	1537.5
+4	2	2412.5
+5	2	2075
+6	2	1787.5
+7	2	2137.5
+8	2	2100
+9	2	2062.5
+10	2	1437.5
+11	2	1625
+12	2	862.5
+13	2	1725
+14	2	1825
+15	2	2137.5
+1	3	1037.5
+2	3	1787.5
+3	3	1600
+4	3	2100
+5	3	2087.5
+6	3	2225
+7	3	2050
+8	3	1375
+9	3	1950
+10	3	1550
+11	3	1187.5
+12	3	1225
+13	3	1750
+14	3	1950
+15	3	2450
+1	4	1362.5
+2	4	1387.5
+3	4	1262.5
+4	4	1912.5
+5	4	1862.5
+6	4	1950
+7	4	2587.5
+8	4	1450
+9	4	1637
+10	4	925
+11	4	1325
+12	4	962.5
+13	4	1337.5
+14	4	1550
+15	4	2237.5
diff --git a/data/ZimmermannTab4.4.rda b/data/ZimmermannTab4.4.rda
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diff --git a/data/ZimmermannTb4.4.rda b/data/ZimmermannTb4.4.rda
index 3aa829d7a749f279d9a573ac313265abf2ad2f0d..ae44f17d618af10083b31b4c3a160962023c052e 100644
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