condition mean min max ZT0-3 3202.4 3202.4 3202.4 ZT4-7 3948.1 3948.1 3948.1 ZT8-11 4408.0 4408.0 4408.0 ZT12-15 4047.6499999999996 4047.6499999999996 4047.6499999999996 ZT16-19 3396.1499999999996 3396.1499999999996 3396.1499999999996 ZT20-23 3202.8 3202.8 3202.8