condition mean min max ZT0-3 706.130515 706.130515 706.130515 ZT4-7 623.0555765 623.0555765 623.0555765 ZT8-11 468.78438600000004 468.78438600000004 468.78438600000004 ZT12-15 528.97126 528.97126 528.97126 ZT16-19 582.0594825000001 582.0594825000001 582.0594825000001 ZT20-23 803.0425585 803.0425585 803.0425585