condition mean min max ZT0-3 0.4401175 0.4401175 0.4401175 ZT4-7 0.18648199999999998 0.18648199999999998 0.18648199999999998 ZT8-11 0.1201025 0.1201025 0.1201025 ZT12-15 0.3277015 0.3277015 0.3277015 ZT16-19 0.9530195 0.9530195 0.9530195 ZT20-23 0.897104 0.897104 0.897104