As an aside, I track both a 7 day and 28 day TSS average and the PMC cumulative, but exponentially increased average. I have marks along side my 7 day TSS scores where I "really" felt worked out and unable to perform at the desired intensities. I don't really have a 28 day "mark" I suppose.

Dec 24th, 2006 I took an unscheduled day off. I ended a week at 180 tss/day. (I readjusted FTP on Christmas day, so this was probably a little high. I'd spent the whole week over 150 tss/day) I was pooped

March 25th, 2007 I was at 168.86 TSS/day. I couldn't complete my interval workout on the following Tuesday (after a rest day), and wasn't back "on form" until Thursday when my 7 day mark was in the 140's again.

My "good line" seems to be right around 115 TSS/day fatigue. More than that and I don't seem to do well. My best times have been at less than 115 TSS/day 7 day average.

This is the PMC I use for personal analysis.