condition mean min max ZT0-3 91.35825 91.35825 91.35825 ZT4-7 43.7088 43.7088 43.7088 ZT8-11 36.355050000000006 36.355050000000006 36.355050000000006 ZT12-15 91.95495 91.95495 91.95495 ZT16-19 143.2785 143.2785 143.2785 ZT20-23 129.8815 129.8815 129.8815