condition mean min max ZT0-3 0.2001435 0.1685145 0.2317725 ZT4-7 0.7803895000000001 0.7803895000000001 0.7803895000000001 ZT8-11 0.943554 0.943554 0.943554 ZT12-15 0 0 0 ZT16-19 0.5640075 0.5640075 0.5640075 ZT20-23 0.665906 0.665906 0.665906