On average they are about 500 metres above sea level.

The level of water in this region was about 2.5 metres.

The water surface is about 10 metres above sea level.

Eventually, he built production up to about 3,000 metres a day.

There were no steps outside the door, so it was about four metres above the ground.

In 2006 the average rate of advance was about a metre a week.

You need to get off the bus about 150-200 metres from this point.

The surface of the lake is about 1,968 metres above sea level.

The height from the ground to the floor of the house is about 3.5 to 4 metres.

Its highest point is about 90 metres above sea level.