condition mean min max ZT0-3 44.759225 41.806200000000004 47.71225 ZT4-7 45.14965 45.14965 45.14965 ZT8-11 96.32505 96.32505 96.32505 ZT12-15 0 0 0 ZT16-19 91.43180000000001 91.43180000000001 91.43180000000001 ZT20-23 62.14735 62.14735 62.14735