condition mean min max ZT0-3 17.78136769775 4.213512677 31.3492227185 ZT4-7 73.72988434249999 68.14998037 79.30978831499999 ZT8-11 105.07720320250002 93.71439301500001 116.44001339 ZT12-15 151.73701870000002 146.0855023 157.3885351 ZT16-19 129.14100655 116.65919695 141.62281615 ZT20-23 96.2346363825 91.303037045 101.16623572