According to the docs here...

"frametime ... iPhone/iPad hardware is always locked at 60Hz refresh rate, thus you will always get multiples times of ~16.7ms (1000ms/60Hz = ~16.7ms)."

...but I'm getting max and min frametimes that are not multiples of 16.7ms on my iPad1. Here's an example:

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iPhone Unity internal profiler stats:
cpu-player>    min: 11.0   max: 15.5   avg: 11.8
cpu-ogles-drv> min:  1.4   max:  2.9   avg:  1.6
frametime>     min: 21.9   max: 43.1   avg: 33.3
draw-call #>   min:  16    max:  18    avg:  17     | batched:    31
tris #>        min:  6145  max:  6151  avg:  6148   | batched:  8240
verts #>       min:  6180  max:  6192  avg:  6186   | batched:  4169
player-detail> physx:  1.0 animation:  0.0 culling  0.0 skinning:  0.0 batching:  0.2 render:  5.2 fixed-update-count: 1 .. 2
mono-scripts>  update:  3.3   fixedUpdate:  0.1 coroutines:  0.0 
mono-memory>   used heap: 1839104 allocated heap: 2072576  max number of collections: 0 collection total duration:  0.0
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A max frametime of 43.1ms is actually 16.7ms multiplied by 2.58. So not really a multiple. Why is that?