Now for some very cool charts:
Above is last Saturday, below is yesterday- one week apart, same exact ride. As I suspected, the low end and the top end power ranges (zone 1 active recovery, and zone 5b anaerobic capacity) are both a lot higher in the second ride, the one which was completed in 11 fewer minutes. To wit, the zone 1 changed from 37 minutes to 48 minutes, and the zone 5b changed from 13 minutes to 18 minutes.. Which goes to show you that for every extra 1 minute I spent in zone 5b, I needed an extra 2 minutes in zone 1.
Another chart:
This one is called the Mean Maximal Power Curve. It plots a multitude of durations against the corresponding maximum number of watts I did. Here, I've plotted both last Saturday's ride (in yellow) and yesterday's ride (dashed). It's hard to tell by looking so let me give you the wattage differences (last week vs this week) for CP1 (340:381), CP2 (307:324), CP5 (280:272), CP10 (255:246), CP20 (237:234), CP30 (same) and CP60 (same). Here again, we can see that I drilled it harder on the climbs- none of which were over a mile- most were 1/4 to 1/2 mile rollers. Here's what I get out of this (and it really comes as no surprise): I perform better when there is a lot of variability. I can wind it up into zone 5 -repeatedly- and recover from it quickly. which also explains why I suffer and perform poorly in situations where a steady zone 4 grind is required. I do a lousy job of "time trialing" and a lousy job of being in a break, especially on a flat course. I'm working on this weakness, of course, and that means I need to get into as many breaks as possible. I need to tough it out to the end just once and break the spell.
Another interesting nugget: Last week's CP60 occured between 90 and 150 minutes. Yesterday, it was minute 1 thru 60 of my ride. Both averaged 226 watts, but normalized watts (243:252) and cadence (86:90) were higher in the 2nd ride's CP60.
Lastly, overall average cadence of both rides was exactly the same: 87. That's not something I plan, it just happens.

I applied 30 second smoothing so the data isn't so choppy. Please bear in mind that during the intervals, my PT display is set to show average watts, so I don't know when I've spiked or dropped wattage, I'm just aiming to manipulate the average as I go. Also notice the heart rate and how it increases during the interval, peaking at the last second. Not for nothing, but I believe that trying to do this workout with a HRM would attain a much different result in output- not necessarily a bad thing- just different. But that's coming from an admitted sufferer of OCD.. which will explain my infatuation with power data.. Anywho.. As you can see, I'm already tired going into this session. Each interval starts out strong and there's some weakness in the middle and then a strong finish at the end. It so happens that this past weekend was the final two days of a pretty stressful 4 week build, which the chart at the top will attest to. 









Six man break, one lap later.