# R Dataset / Package boot / manaus

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Documentation

On this Picostat.com statistics page, you will find information about the manaus data set which pertains to Average Heights of the Rio Negro river at Manaus. The manaus data set is found in the boot R package. You can load the manaus data set in R by issuing the following command at the console data("manaus"). This will load the data into a variable called manaus. If R says the manaus data set is not found, you can try installing the package by issuing this command install.packages("boot") and then attempt to reload the data. If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the manaus R data set. The size of this file is about 23,918 bytes.

## Average Heights of the Rio Negro river at Manaus

### Description

The manaus time series is of class "ts" and has 1080 observations on one variable.

The data values are monthly averages of the daily stages (heights) of the Rio Negro at Manaus. Manaus is 18km upstream from the confluence of the Rio Negro with the Amazon but because of the tiny slope of the water surface and the lower courses of its flatland affluents, they may be regarded as a good approximation of the water level in the Amazon at the confluence. The data here cover 90 years from January 1903 until December 1992.

The Manaus gauge is tied in with an arbitrary bench mark of 100m set in the steps of the Municipal Prefecture; gauge readings are usually referred to sea level, on the basis of a mark on the steps leading to the Parish Church (Matriz), which is assumed to lie at an altitude of 35.874 m according to observations made many years ago under the direction of Samuel Pereira, an engineer in charge of the Manaus Sanitation Committee Whereas such an altitude cannot, by any means, be considered to be a precise datum point, observations have been provisionally referred to it. The measurements are in metres.

### Source

The data were kindly made available by Professors H. O'Reilly Sternberg and D. R. Brillinger of the University of California at Berkeley.

### References

Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.

Sternberg, H. O'R. (1987) Aggravation of floods in the Amazon river as a consequence of deforestation? Geografiska Annaler, 69A, 201-219.

Sternberg, H. O'R. (1995) Waters and wetlands of Brazilian Amazonia: An uncertain future. In The Fragile Tropics of Latin America: Sustainable Management of Changing Environments, Nishizawa, T. and Uitto, J.I. (editors), United Nations University Press, 113-179.

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Dataset imported from https://www.r-project.org.

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