first you have to convert into a format which can be used by arcmap, currently it is degrees minutes seconds
you can do this in excel if the data are in separate columns...otherwise you have bigger problems
13° 8' 25.69" =
seconds to minutes = ( 25.69/60) = 0.42816666....
minutes to degrees = (8.42816666 / 60 ) = 0.1404694...
therefore 13.1404694... °