condition mean min max ZT0-3 0.18510200000000002 0.18510200000000002 0.18510200000000002 ZT4-7 0.613336 0.613336 0.613336 ZT8-11 0.0823885 0.0823885 0.0823885 ZT12-15 0.0 0.0 0.0 ZT16-19 0.154854 0.154854 0.154854 ZT20-23 0.0 0.0 0.0