condition mean min max ZT0-3 0.0624490011372925 0.062351502274585 0.0625465 ZT4-7 0.063617 0.063617 0.063617 ZT8-11 0.18709599999999998 0.18709599999999998 0.18709599999999998 ZT12-15 0 0 0 ZT16-19 0.45810700000000004 0.45810700000000004 0.45810700000000004 ZT20-23 0.5050605 0.5050605 0.5050605