condition mean min max ZT0-3 9.097227557250001 8.5244435215 9.670011593 ZT4-7 3.8571851104999997 3.6362829075 4.078087313499999 ZT8-11 5.39242953575 3.7989573575 6.985901714 ZT12-15 9.19291140575 7.4609351544999996 10.924887657 ZT16-19 5.71279468675 5.65960191 5.7659874635 ZT20-23 5.93472474125 5.828564500000001 6.0408849825