Even during the course of a day, the weight can vary by 5 to 10%.

The medical problems that may come up vary by country.

How much is right for your child varies by age.

The quality of the light changed throughout the day and varied by season.

The numbers vary by school level and type of class.

Prices vary by local market and start at $29.99 per month.

The average person needs 8.3 hours, though it varies by individual.

Room rates vary by the type and time of year.

This risk varies by the time of use and the child's age.

The available days vary by hotel, so you have to check.