condition mean min max ZT0-3 25.01682398975 22.987619709500002 27.04602827 ZT4-7 31.57638387 23.421186149999997 39.731581590000005 ZT8-11 37.1571337 33.33780113 40.97646627 ZT12-15 183.152508175 127.69197435 238.613042 ZT16-19 474.99430115 372.93904995 577.04955235 ZT20-23 830.53012715 707.6242179 953.4360363999999