condition mean min max ZT0-3 7781.2 7781.2 7781.2 ZT4-7 12391.4 12391.4 12391.4 ZT8-11 11820.15 11820.15 11820.15 ZT12-15 11811.05 11811.05 11811.05 ZT16-19 10726.25 10726.25 10726.25 ZT20-23 7841.8 7841.8 7841.8