multiPointCorrection-class: An S4 class to represent a USGS multipoint correction
In PatrickEslick/CWQkitr: Tools For Reviewing Continuous Water Quality Data

An S4 class to represent a USGS multipoint correction

startTime: the beginning time of the correction, a POSIXct object.
endTime: the ending time of the correction, a POSIXct object.
set: the set the correction was applied in, an integer - either 1 (fouling), 2 (drift), or 3 (other).
startValues: the values to which the starting offsets are applied. Must be the same length as startOffsets.
startOffsets: the starting offsets of the correction. Must be the same length as startValues.
endValues: the values to which the ending offsets are applied. Must be the same length as endOffsets.
endOffsets: the ending offsets of the correction. Must be the same length as endValues.