condition mean min max ZT0-3 0.97336875 0.7170725 1.229665 ZT4-7 0.7985065 0.7985065 0.7985065 ZT8-11 0.7570060000000001 0.7570060000000001 0.7570060000000001 ZT12-15 0 0 0 ZT16-19 0.8288515 0.8288515 0.8288515 ZT20-23 1.52991 1.52991 1.52991