condition mean min max ZT0-3 0.9568115375 0.263829523 1.649793552 ZT4-7 7.8760178632499995 5.615000427 10.137035299499999 ZT8-11 26.843468955 19.442730179999998 34.24420773 ZT12-15 36.7978756475 36.330868975 37.26488232 ZT16-19 32.7561793225 28.59794747 36.914411175 ZT20-23 33.81531302 27.775892725 39.854733315