condition mean min max ZT0-3 0.136227 0.0690245 0.20342949999999999 ZT4-7 0.10303584999999998 0.10303584999999998 0.10303584999999998 ZT8-11 0.24154150000000002 0.24154150000000002 0.24154150000000002 ZT12-15 0 0 0 ZT16-19 0.271082 0.271082 0.271082 ZT20-23 0.3401555 0.3401555 0.3401555