An evaluation over a time period.
data(clay)
A data frame with 69 observations on the following 3 variables.
Experimental field.
per.clay per.clay
days days
ralstonia ralstonia
International Potato Center. CIP - Lima Peru.
#> 'data.frame': 69 obs. of 3 variables: #> $ per.clay : int 4 4 4 4 4 4 32 32 32 32 ... #> $ days : int 2 15 29 43 58 73 2 15 29 43 ... #> $ ralstonia: num 7.3 6.99 6.31 5.97 5.54 ...