condition mean min max ZT0-3 91.5903872575 85.54771717 97.633057345 ZT4-7 106.70069033000001 95.00353516 118.39784550000002 ZT8-11 134.13810435 121.5433081 146.7329006 ZT12-15 174.4788798 158.63823409999998 190.3195255 ZT16-19 183.520495275 171.4718201 195.56917045 ZT20-23 140.813279675 132.43528765000002 149.1912717