condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.00862443875 0.0 0.0172488775 ZT12-15 0.0055207775 0.0 0.011041555 ZT16-19 0.04954415575 0.030473301499999998 0.06861501 ZT20-23 0.0 0.0 0.0