R: Ammonia nitrogen found in river

nh4 {MESS} | R Documentation

## Ammonia nitrogen found in river

### Description

Monthly levels of ammonia nitrogen in a river over two years

### Format

A data frame with 120 observations on the following 3 variables.

nh4

  The ammonia nitrogen levels (mg/l). A value of zero corresponds to a censoring, but it really is censored at <0.01

cens

  A logical vector indicating if the value was censored

year

  The year

### Source

Found on the internet and partly simulated

### Examples

    data(nh4)

[Package MESS version 0.5.9 Index]