condition mean min max ZT0-3 116.7179873325 96.396990725 137.03898394 ZT4-7 109.00890755500001 56.33273671 161.6850784 ZT8-11 90.97181436 73.00384817999999 108.93978054 ZT12-15 108.51052444499999 88.28446553666667 128.73658335333332 ZT16-19 77.25531931833333 68.26549138 86.24514725666667 ZT20-23 71.72665198166666 56.303465763333335 87.1498382