This dataset contains the monthly mean temperatures recorded at Rothamsted Experimental Station from 1891 to 1990. Each observation represents the mean temperature (variate Temperature) for a specific month and year within this 100-year period. The data are suitable for time series analysis and are expected to exhibit an annual cyclic pattern, making them appropriate for modeling using trigonometric regression methods.
Format
A data frame with 3 variables: MonthName, Month, Temperature.
- MonthName
Factor. Name of the month (e.g., "January", "February").
- Month
Integer. Numeric code for the month (1 = January, ..., 12 = December).
- Temperature
Numeric. Mean temperature for the month (in degrees Celsius).
Source
Welham, S. J., Gezan, S. A., Clark, S. J., and Mead, A. (2015) Statistical Methods in Biology: Design and analysis of experiments and regression
Examples
lm(Temperature ~ sin(2 * pi * Month / 12) + cos(2 * pi * Month / 12),
data = temperature)
#>
#> Call:
#> lm(formula = Temperature ~ sin(2 * pi * Month/12) + cos(2 * pi *
#> Month/12), data = temperature)
#>
#> Coefficients:
#> (Intercept) sin(2 * pi * Month/12) cos(2 * pi * Month/12)
#> 9.125 -4.087 -5.129
#>