condition mean min max ZT0-3 41.417660000000005 13.62782 69.20750000000001 ZT4-7 16.594949999999997 16.594949999999997 16.594949999999997 ZT8-11 17.62085 17.62085 17.62085 ZT12-15 0 0 0 ZT16-19 6.90821 6.90821 6.90821 ZT20-23 4.005835 4.005835 4.005835