[seek-dev] Ozone warning current and warning levels

[Bertram Ludaescher]

Hi:

On a sunny day like this I ask myself is it healthy to go for a jog or
not (and I'm always looking for reasons not to ;-)

Can someone tell me where I find the current ozone readings say for
San Diego? Live data streams and all that jazz...

For example, I found this:
	http://www.sdapcd.co.san-diego.ca.us/air/data/8hour_web.txt

First I note that 8h averages are of course a bit euphemistic: when I
run for an hour and the peak is right then, I won't feel the effect of 
an 8 hour average ;-)

Also: What kind of strange unit is PPM? I guess parts per million. 
But how do I compare this to the values that I find elsewhere, for
example on several European pages I found "microgram / m^3". 
How do I go from PPM to the latter??? Figure out the density, pressure 
etc of air? The same for ozone? Man... complicated..

Unit converters to the front!! Give us the equations!

Bertram

PS yes, that makes a nice Kepler workflow too: send me a message to my 
cell phone when the 3 hour average lies above the "warning level". Of
course the averaging should be done in Kepler... piece of cake...