I dunno. Take a look at ISM training for McNulty in November:
Roughly speaking I see a fair bit of work at 240W, 280W, and 320W.
And December:
Roughly speaking I see a fair bit of work in the mid to upper 200s, say 250-280W.
And mid January he did a 20 minute (actually 19 min) test at 465W:
and saving you a click here are the 19 minutes:
A few days later he did 3x60-min at 360W:
and saving you a click:
I’m guessing that was 85% tempo pace at an ftp of 420W.