condition mean min max ZT0-3 6726.349999999999 6726.349999999999 6726.349999999999 ZT4-7 21243.1 21243.1 21243.1 ZT8-11 22962.35 22962.35 22962.35 ZT12-15 17731.05 17731.05 17731.05 ZT16-19 7953.9 7953.9 7953.9 ZT20-23 1802.5 1802.5 1802.5