condition mean min max ZT0-3 4109.950000000001 4109.950000000001 4109.950000000001 ZT4-7 3632.6 3632.6 3632.6 ZT8-11 3384.7 3384.7 3384.7 ZT12-15 3104.8 3104.8 3104.8 ZT16-19 3452.1000000000004 3452.1000000000004 3452.1000000000004 ZT20-23 4433.9 4433.9 4433.9