condition mean min max ZT0-3 4080.9 4080.9 4080.9 ZT4-7 3806.3 3806.3 3806.3 ZT8-11 3922.25 3922.25 3922.25 ZT12-15 3547.3 3547.3 3547.3 ZT16-19 3145.35 3145.35 3145.35 ZT20-23 3601.3 3601.3 3601.3