Dataframe, output of simulateAccumulationRate.
data(accumulationRate)
Dataframe with 5000 rows and the following columns: #' @return A dataframe with the following columns.
time: numeric, time or age of the given case. Important: the time column goes from "left to right", meaning that oldest samples have the lowest values of age/time, and viceversa.
accumulation.rate: numeric, in years per centimetre, simulated accumulation rate.
grouping: integer, grouping variable to aggregate together (with aggregateSimulation) samples deposited in the same centimetre according accumulation.rate.