Without precise medical data, I can offer two general possibilities.

No precise data about the amount of oil in the plain is publicly available.

The new study, using a urine test, provides the most precise data yet.

It is too early to get precise data on this.

More precise data in animals and humans have so far not been determined.

The company says the reports offer far more precise data than traditional rating methods.

Maybe on your next visit you'll be able to supply more precise data as to what you would like to have from me.

They are not intended to provide precise data in a given time frame.

"If we want to make clear recommendations, however, we'll need more precise data."

This number is, of course, continuing to rise, even though no precise data are available.