pie1w: Example data for rkt function

In rkt: Mann-Kendall Test, Seasonal and Regional Kendall Tests

Description

Bulk open field deposition collected in Val Sessera (Italy) in 1998-2007. Raw weekly data.

Usage

data(pie1)

Format

A data frame with 718 observations on the following 4 variables.

Date

sampling date (year+decimals)

mm

amount of precipitation (mm)

SO4

sulphate concentration (mg/L)

NO3

nitate concentration (mg N/L)

Details

SO4 shows a decreasing trend NO3 and mm show no significant trend

Source

Marchetto A., Rogora M. & Arisci S. 2013 Trend analysis of atmospheric deposition data: a comparison of statistical approaches. Atmospheric Environment 64, 95-102

Rogora M., Mosello R., Arisci S., Brizzio M., Barbieri A., Balestrini R., Waldner P., Schmitt M., Stahli M.,Thimonier A., Kalina M., Puxbaum H., Nickus U., Ulrich E., Probst A. 2006 An overview of atmospheric deposition chemistry over the Alps: Present status and long-term trends. Hydrobiologia 562, 17–40

Examples

data(pie1w)
rkt(pie1w$Date,pie1w$SO4)

Example output

Standard model
Tau = -0.06411917
Score =  -1188
var(Score) =  804868.7
2-sided p-value =  0.1858066
Theil-Sen's (MK) or seasonal/regional Kendall (SKT/RKT) slope=  -0.06814002

rkt documentation built on March 29, 2021, 5:11 p.m.