ex1026: Thinning of Ozone Layer

In Sleuth3: Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd Ed)"

Description

Depletion of the ozone layer allows the most damaging ultraviolet radiation to reach the Earth's surface. To measure the relationship, researchers sampled the ocean column at various depths at 17 locations around Antarctica during the austral spring of 1990.

Usage

ex1026

Format

A data frame with 17 observations on the following 3 variables.

Inhibit

percent inhibition of primary phytoplankton production in water

UVB

UVB exposure

Surface

a factor with levels "Deep" and "Surface"

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

References

Smith, R.C., Prézelin, B.B., Baker, K.S., Bidigare, R.R., Boucher, N.P., Coley, T., Karentz, D., MacIntyre, S., Matlick, H.A., Menzies, D., Ondrusek, M., Wan, Z. and Waters, K.J. (1992). Ozone Depletion: Ultraviolet Radiation and Phytoplankton Biology in Antarctic Waters, Science 255(5047): 952–959.

Examples

str(ex1026)

Example output

'data.frame':	17 obs. of  3 variables:
 $ Inhibit: num  0 1 6 7 7 7 9 9.5 10 11 ...
 $ UVB    : num  0 0 0.01 0.01 0.02 0.03 0.04 0.01 0 0.03 ...
 $ Surface: Factor w/ 2 levels "Deep","Surface": 1 1 1 2 2 2 2 1 1 2 ...

Sleuth3 documentation built on May 2, 2019, 6:41 a.m.