species,age,perc.freq
bluegill,1,10.8
bluegill,2,57.4
bluegill,3,18.1
bluegill,4,6.7
bluegill,5,3.3
bluegill,6,0.8
redear,1,47.8
redear,2,30
redear,3,18.2
redear,4,2.7
redear,5,0.9
redear,6,0.4