They examined the resulting structures using a
variety of analysis methods, including some at the Advanced Light Source and the Molecular Foundry, two DOE Office of Science User Facilities at Lawrence Berkeley National Laboratory.
In the 2001 update (described in Hansen et al. [2001]-RRB-
of the analysis method (originally published in Hansen et al. [1981]-RRB-, we included improvements that NOAA had made in station records in the U.S., their corrections being based mainly on station - by - station information about station movement, change of time - of - day at which max - min are recorded, etc..