Description Usage Format Details Source Examples
Mass measurements for 9 batch anaerobic reactors.
1 | data("mass")
|
A data frame with 18 observations on the following 4 variables.
id
identification code, a unique value for each reactor in the dataset. A factor with levels 2_1
, 2_2
, 2_3
, 2_4
, 2_5
, 2_6
, 2_10
, 2_11
, and 2_12
date.time
date and time of mass measurement, a POSIXct object.
days
elapsed time of mass measurements (from reactor setup) in days, a numeric vector.
mass
total reactor mass in g, a numeric vector.
when
when was measurement taken? A character vector with two values.
These data are meant to be example data for mass2vol
, for gravimetric determination of biogas production.
Reactors were 500 mL glass serum bottles with butyl rubber septa and screw caps.
Masses were measured with an electronic balance to 100 mg.
Data in vol
, mass
, massw
, comp
, and setup
are from the same reactors.
Measurements by Charlotte Rennuit and Sasha Hafner.
1 |
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