Well, that didn't go well. It was cloudy, cold (for SoCal), and breezy. The warm up felt OK until the 5 minute effort. Could tell that the engine room didn't have enough dilithium crystals. During the 20-minute test I couldn't get myself into a TT pace or heart rate. Got a number but I don't know if competitive knitting would even work.
NP from each of two big races in prior 9 days was over 10 watts higher than average and normalized watts from test. I guess it was at least a reasonable solo workout. I'll try again in two weeks.