4x12 steady state

Did a modified version of the 4x12 steady state with 11 min at 347, 11 at 339, 11 at 347, 11 at 339 and then 4 at 342. I took about a 60-90 seconds between efforts so this was a pretty continuous 48 minute steady state. Felt very good. USed Riverside Drive from Delta to Adams Landing out and back. Very little traffic around 1-2:00pm. Kind of wet from the snow melt in some areas and lots of old road salt, gravel, and other winter debris in the bike lane. Projected FTP is 350 so going 48 minutes in the low 340's at 150-155 hr avg, well below LT HR, would seem about right.