condition mean min max ZT0-3 185.45525 159.9595 210.95100000000002 ZT4-7 302.3945 302.3945 302.3945 ZT8-11 193.9065 193.9065 193.9065 ZT12-15 0 0 0 ZT16-19 238.9365 238.9365 238.9365 ZT20-23 243.541 243.541 243.541