condition mean min max ZT0-3 0.36738725 0.3357565 0.399018 ZT4-7 1.1464465000000001 1.1464465000000001 1.1464465000000001 ZT8-11 1.280115 1.280115 1.280115 ZT12-15 0 0 0 ZT16-19 1.319955 1.319955 1.319955 ZT20-23 1.39182 1.39182 1.39182