header: MATLAB 5.0 MAT-file, Platform: GLNXA64, Created on: Thu Jul  5 12:06:20 2012
variable Bottom: class double, size 1x530
variable Data: class single, size 1045x530
variable Depth: class double, size 1045x1
variable Elevation: class double, size 1x530
variable GPS_time: class double, size 1x530
variable Latitude: class double, size 1x530
variable Longitude: class double, size 1x530
variable Surface: class double, size 1x530
variable Time: class double, size 1045x1