Which made 400 a good lower limit and 700 a great upper limit, defining the proximity of the peak. We can remember the characters who lived and deleted, and we can remember the characters who deleted even earlier with possibly earlier age death ahead of them. The sample size of this is 136 chars who reliably made it to age death. Wither and age+ items might be contributors in some cases, but I still think that the statistics are reliable enough to determine the probable age death to happen between 400 and 700 hours and say that earlier or later deaths can occur, but they are rare.

The statistics for necromancers were:

Hours Age Deaths
100-150 4
150-200 2
200-250 2
250-300 2
300-350 1
350-400 1
400-450 2
600-650 1