condition mean min max ZT0-3 2160.3083333333334 1404.605 3354.48 ZT4-7 3136.98 3136.98 3136.98 ZT8-11 3004.98 3004.98 3004.98 ZT12-15 2122.1675 1992.52 2251.815 ZT16-19 2560.66 2560.66 2560.66 ZT20-23 1194.315 1194.315 1194.315