Updated every hour. Updated every hour.
Dates indicate the start of regular observations.
Current state at the stations To select the most recent graph choose a station and type and click on the icon. To see plots for all stations click on the icon in the last row. Previous years images are contained in an archive accessible by FTP . The data are processed in near real-time, have not been fully validated, and are preliminary. If a system problem occurs outside of regular working hours, it will not be fixed until the following work day.