condition mean min max ZT0-3 0.11218929999999999 0.11218929999999999 0.11218929999999999 ZT4-7 0.06920795 0.06920795 0.06920795 ZT8-11 0.0250972 0.0250972 0.0250972 ZT12-15 0.1293745 0.1293745 0.1293745 ZT16-19 0.240624 0.240624 0.240624 ZT20-23 0.319194 0.319194 0.319194