These allow you to see current status definitions and compare these with those of Turner in 1955.
Also, worth mentioning is that the website software has recently been changed so this will send compressed data to your browser if it can support this. This can vastly improve the download time for large pages like these.
And on this topic, can I also recommend the new Firefox web browser. This is available free at Mozilla-Firefox and is an alternative to Internet Explorer. This is an excellent product and has many features (like popup blocking) to improve your browsing experience.