Turns out....the pdf you found is the Fourth (2001), not Fifth Edition. and it is not complete...it is missing all the Appendices, which is where the things like dive tables are.
There is no known free pdf of the 5th (2013) or 6th (2017) editions.
When the new editions come out, there are new chapters/appendices and some old ones are removed.
Wikipedia speaks of this.
Best Publishing is the source, directly from them or Amazon.
You can get the 5th (not latest) edition in paperback used for under $20.
Amazon.com: Buying Choices: NOAA Diving Manual 5th Edition