Typical reaction times vary from 1-10 hours at temperatures of 60-110 C.

The half-life elimination varies from 3.4-60 hours, depending on age.

Estimates which include the initial symptoms are longer, varying from ten to eighteen hours.

Our walks varied from two to four hours.

The time of deprivation may vary from 4 to 18 hours.

The duration can vary from 60-80 hours per week depending upon the rotation.

Estimates vary widely about how long a plasma screen can last, from 10,000 to 30,000 viewing hours.

The courses vary from 9 hours to 13 weeks and cost about $35 to $45 an hour.

Race lengths vary from 2 hours to 12 hours.

There are four different action packed programs offered which vary in length from two to four hours.