condition mean min max ZT0-3 789.4000000000001 789.4000000000001 789.4000000000001 ZT4-7 927.7 927.7 927.7 ZT8-11 1009.4 1009.4 1009.4 ZT12-15 689.45 689.45 689.45 ZT16-19 808.55 808.55 808.55 ZT20-23 1178.15 1178.15 1178.15