condition mean min max ZT0-3 21.71905 18.71635 24.72175 ZT4-7 10.915099999999999 10.915099999999999 10.915099999999999 ZT8-11 10.296205 10.296205 10.296205 ZT12-15 0 0 0 ZT16-19 13.38205 13.38205 13.38205 ZT20-23 14.9735 14.9735 14.9735