But there are year-to-year variations all the same.

Known year-to-year variation within that period allows correlation with soil and sediment layers.

Not only that, but despite some year-to-year variations, it appeared the hole was becoming larger.

Climate also includes statistics other than the average, such as the magnitudes of day-to-day or year-to-year variations.

The rainfall is low, around 300 mm a year, and with large year-to-year variations.

The report also details the finer climate patterns that help explain year-to-year variations.

All the studies note that there are clear trends of climate change, despite year-to-year variations.

This is more than twice the usual year-to-year variation, the researchers said.

Considerable year-to-year variations have been recorded, and Colombia sometimes experiences droughts.

Although the rains of 1989 are extreme, they are well within year-to-year variations.