condition mean min max ZT0-3 3897.1000000000004 3897.1000000000004 3897.1000000000004 ZT4-7 3701.4 3701.4 3701.4 ZT8-11 3598.25 3598.25 3598.25 ZT12-15 3266.55 3266.55 3266.55 ZT16-19 3579.95 3579.95 3579.95 ZT20-23 3867.6499999999996 3867.6499999999996 3867.6499999999996