condition mean min max ZT0-3 0.6670115 0.6670115 0.6670115 ZT4-7 1.2489745 1.2489745 1.2489745 ZT8-11 0.6253569999999999 0.6253569999999999 0.6253569999999999 ZT12-15 0.8094505000000001 0.8094505000000001 0.8094505000000001 ZT16-19 0.45246949999999997 0.45246949999999997 0.45246949999999997 ZT20-23 0.7582515000000001 0.7582515000000001 0.7582515000000001