https://www.uvm.edu/femc/data/archive/project/modis/dataset/modis-dur-yearly-mean-std
FEMC - Dataset - MODIS DUR Yearly Mean and STD - Overview
Yearly mean, standard deviation of the yearly mean, and long-term mean (2003-present) for MODIS DUR (duration of the growing season).
std overviewfemcdatasetmodisdur