condition mean min max ZT0-3 0.6710045 0.6710045 0.6710045 ZT4-7 0.9991 0.9991 0.9991 ZT8-11 0.545864 0.545864 0.545864 ZT12-15 0.681822 0.681822 0.681822 ZT16-19 1.621315 1.621315 1.621315 ZT20-23 0.752359 0.752359 0.752359