condition mean min max ZT0-3 65.98740000000001 60.00985 71.96495 ZT4-7 52.254599999999996 52.254599999999996 52.254599999999996 ZT8-11 105.2715 105.2715 105.2715 ZT12-15 0 0 0 ZT16-19 141.1685 141.1685 141.1685 ZT20-23 109.8455 109.8455 109.8455