condition mean min max ZT0-3 1.7649158987499998 0.5588133829999999 2.9710184144999996 ZT4-7 7.2243130165 6.636411112999999 7.81221492 ZT8-11 3.3757915892500003 2.9410070145000002 3.8105761640000004 ZT12-15 13.45796555575 7.4254658415 19.49046527 ZT16-19 48.786024335 32.26507669 65.30697198 ZT20-23 148.048472675 105.61682250000001 190.48012285