Do you mean to say something like this for the second Floating Price:

The average of (i) the settlement price for the Novermber NYMEX Light Sweet 
Crude Oil Futures Contract on October __, 1999 and (ii) the average of the 
daily settlement prices for the December NYMEX Light Sweet Crude Oil Futures 
Contract for each Commodity Business Day in October, 1999

Please let me know.  Thanks.  Sara