condition mean min max ZT0-3 1.06002375 0.8184575000000001 1.30159 ZT4-7 0.728495 0.728495 0.728495 ZT8-11 0.7531399999999999 0.7531399999999999 0.7531399999999999 ZT12-15 0 0 0 ZT16-19 1.452865 1.452865 1.452865 ZT20-23 1.86327 1.86327 1.86327