condition mean min max ZT0-3 59.51651 59.51651 59.51651 ZT4-7 647.4610665 647.4610665 647.4610665 ZT8-11 184.230838 184.230838 184.230838 ZT12-15 145.8089795 145.8089795 145.8089795 ZT16-19 49.2617315 49.2617315 49.2617315 ZT20-23 17.408594 17.408594 17.408594