Smiley, it was 0.2oC or something... bit like when AF is due (if you have charted your cycle). I can't really remember, but I do recall it being lower. Sorry not much help... I might chart my BBT closer to my edd and then post it on here... if I remember.

Tanya

ETA:Relle, you are closer... let us know how you go if you decide to do it