Each day, as afternoon turns into evening, the U.S. Forest Service research staffer based at the experimental forest there walks over to the weather station next to the office and looks at two thermometers — one showing the day’s maximum temperature, the other showing the minimum. They record the readings and add them to the station’s long-term dataset, which stretches back to 1913. …And the U.S. Forest Service, which manages the site, can’t fill the role permanently because of the federal government’s continued hiring freeze, which has been extended to October. …But there will be no full-time research staff there, forcing the discontinuation of a handful of long-term data collection efforts — such as the daily weather readings, regular streamflow monitoring and a weekly acid rain sample that’s part of the National Atmospheric Deposition Program.