Variation of 21 days or more between a woman's shortest and longest cycle lengths is considered very irregular.

A smaller study of 140 women performed in 2006 found a mean cycle length of 28.9 days.

The significance of the clock running slow with a cycle length of 25 rather than 24 hours will be considered later).

Naegele's Rule assumes an average cycle length of 28 days, which is not true for everyone.

Other options include increasing the cycle length or stimulation frequency of the device.

The signals have a split of 30 seconds and a cycle length of 60 second.

We can expect to get a large cycle length for those small numbers, because .

Such programs have been produced with various cycle lengths:

The experimenter sets the cycle length, and it is possible to sample every 333 to 500 microseconds.

The cycle length depends upon the species cut, the local custom, and the use to which the product is put.