"normal" "sensecent" "pct.cond" "pct.total" "2N_old" 2001 149 7.44627686156922 1.78678498620938 "2N_yng" 1994 161 8.07422266800401 1.93068713274973 "Dp16_old" 1463 64 4.37457279562543 0.76747811488188 "Dp16_yng" 2367 140 5.91465990705534 1.67885837630411