condition mean min max ZT0-3 7522.700000000001 7522.700000000001 7522.700000000001 ZT4-7 9512.3 9512.3 9512.3 ZT8-11 6389.25 6389.25 6389.25 ZT12-15 4528.35 4528.35 4528.35 ZT16-19 5994.0 5994.0 5994.0 ZT20-23 7392.35 7392.35 7392.35