This was based on observations made between 1998 through 2000.

Much of the film was based on his observations between students, teachers and parents at the Institute.

These norms are based on observations of those around you.

The diagnosis is based on observations from parents and teachers.

They are based on observations of everyday experience and language use.

And what's the use of being on observation when you can't observe anything?

An overall average of 70% must be obtained on observations to pass the course.

This social history was largely based on his own observations as a young reporter in the city.

Chinese seasons are based on observations of the sun and stars.

They do not rely on direct observations of the stars.