Basically yes. What are you trying to accomplish with your training? Sprint speed, attacking, overall fitness, endurance, etc? I only ask because 30 seconds is a really short interval for cycling. The idea is to accelerate and then hold that output without fading. 30 seconds barely gets you at full speed before you are stopping. I would suggest maybe working in minute-sized blocks - 1 min, 2 min, etc. Now you are REALLY going to feel like dying, but I think you'll see better results.
Oh, and why aren't you recording your miles on the AT Cycling Log?????? (see below)