Indoor positionning system matlab short code?

I am working on a project related to indoor positioning system. I collected all the data's, for example:

21/11/2013 33:24.6 WIFI UHWifi 00:19:92:04:22:6A -75 -1

21/11/2013 33:24.6 WIFI UHWifi 00:19:92:0F:E5:EA -86 -1

21/11/2013 33:24.6 WIFI eduroam 00:19:92:04:22:69 -75 -1

21/11/2013 33:24.6 WIFI eduroam 00:19:92:0E:78:29 -65 -1

21/11/2013 33:24.6 WIFI UHWifi 00:19:92:0F:E9:8A -76 -1

21/11/2013 33:24.6 WIFI UHWifi 00:19:92:10:68:62 -76 1

21/11/2013 33:24.6 WIFI eduroam 00:19:92:10:68:61 -76 1

21/11/2013 33:24.6 WIFI eduroam 00:19:92:10:68:69 -82 -1

This is the point number '1' out of 25 that I have collected for the first floor. I need to write a short algorithm, hence, using those points, people should know where they are located.