I really hope you are not trolling with all this and wasting everybody's time. I'll give the benefit of the doubt.
Don't worry about your speed day to day. There can be so many factors for how fast you are on a specific day. What you ate for breakfast, temperature, humidity, air pressure (yes, air pressure can have an affect, read the Platypus thread), wind (even slight) etc. Just go out and ride your bike.
If you really want to know how you are doing day to day get a power meter. It will tell you when you are fatigued much better than your speed. Can't hold the power you normally can today? Probably because of the running intervals you did earlier. Pushing solid power? Probably going on a bit fresher legs.
You seem to be into the tech of cycling so maybe a power meter would be right up your alley. When you start training smart with power you won't care about your speed on day to day rides.
Don't worry about your speed day to day. There can be so many factors for how fast you are on a specific day. What you ate for breakfast, temperature, humidity, air pressure (yes, air pressure can have an affect, read the Platypus thread), wind (even slight) etc. Just go out and ride your bike.
If you really want to know how you are doing day to day get a power meter. It will tell you when you are fatigued much better than your speed. Can't hold the power you normally can today? Probably because of the running intervals you did earlier. Pushing solid power? Probably going on a bit fresher legs.
You seem to be into the tech of cycling so maybe a power meter would be right up your alley. When you start training smart with power you won't care about your speed on day to day rides.