POP POP_56  POP_58  POP_60  POP_66  POP_68  POP_71  POP_84
 a   10       10      20      20      30      30      30
 b   10       10      10      20      20      20      20
 c   10       10      20      20      30      30      30
 d   40       40      40      40      40      40      40
 e   50       50      50      60      60      60      60

POP POP_56  POP_58  POP_60  POP_66  POP_68  POP_71  POP_84
 a    10      10
 a                    20      20
 a                                    30      30      30
 b    10      10      10
 b                            20      20      20      20
 c    10      10
 c                    20      20
 c                                    30      30      30
 d    40      40      40      40      40      40      40
 e    50      50      50
 e                            60      60      60      60

structure(list(POP = structure(1:5, .Label = c("a", "b", "c",
"d", "e"), class = "factor"), DAP_56 = c(10L, 10L, 10L, 40L,
50L), DAP_58 = c(10L, 10L, 10L, 40L, 50L), DAP_60 = c(20L, 10L,
20L, 40L, 50L), DAP_66 = c(20L, 20L, 20L, 40L, 60L), DAP_68 = c(30L,
20L, 30L, 40L, 60L), DAP_71 = c(30L, 20L, 30L, 40L, 60L), DAP_84 = c(30L,
20L, 30L, 40L, 60L)), class = "data.frame", row.names = c(NA,
-5L))