Separate data based on latitude and longitude

I have a set of data that needs to be organised into sections based on where the data was collected. There are 5 sections that the data may fall into, therefore I need to separate the data into these five sections based on their latitude and longitude. How would I go about doing this?

Thanks, Natalie

[sixwwwwww]

can you show sample of your data?

[Natalie]

it is difficult to show a sample of the data as it is a 890 by 37 matrix. The first few columns contain information regarding the voyage, the 5th column contains the latitude at which the data was collected, the 6th contains the longitude. The next columns contain information on time of collection and results of the data collection. A simplified example of one row would be:

2 , NaN, 83, NaN, -62.18, -36.59, 1983, 318, 0, 0.1, NaN, 0.28, 6, 1.06, 0.66, 0.41, 0.29, 0.26, 0.30, 0.39, 0.49, 0.60, 0.67, 0.68, 0.64, 0.56, 0.45, 0.36, 0.28, 0.22, 0.18, 0.15, 0.13, 0.11, 0.10, 0.09, 0.07

Thanks, Natalie