Trying to Identify Ovulation and Implantation Dates

Since my cycle is complete (or I suppose, not ending for a while...), can you give your opinion on when I ovulated and when implantation occured?  Based on my chart, it looks like ovulation was on day 15 with implantation occuring around days 22-24 (based on spotting).  One other scenario is if ovulation occured on day 13 with implantation on day 18 (2nd increase in temps).

I suppose it doesn't really matter the exact days I ovulated/egg was fertilized and when it implanted but just kind of curious.  I figured since I have the data, wouldn't mind a few expert opinions. 

Thanks in advance!

Ryan