A data frame with 5114 observations on the following 16 variables.
date
date of death in date format (year-month-day)
cvd
daily number of CVD deaths
dow
day of the week (character)
tmpd
daily mean temperature (degrees Fahrenheit)
o3mean
daily mean ozone (parts per billion)
o3tmean
daily trimmed mean ozone (parts per billion)
Mon
indicator variable for Monday
Tue
indicator variable for Tuesday
Wed
indicator variable for Wednesday
Thu
indicator variable for Thursday
Fri
indicator variable for Friday
Sat
indicator variable for Saturday
month
month (integer from 1 to 12)
winter
indicator variable for winter
spring
indicator variable for spring
summer
indicator variable for summer
autumn
indicator variable for autumn