Something's wrong

Here is a picture of my power distribution for the last 28 days:



The labels are Active Recovery, Endurance, Tempo, Threshold, VO2Max and Anaerobic Capacity. As you can see it skews heavily on Tempo and Endurance combining close to 90%.

Now a lot of the rides are done without a powermeter and therefore are estimates. But the point that too much time is spent on tempo and Endurance is still there. I don't feel very comfortable riding above threshold and it shows on the chart.