condition mean min max ZT0-3 4819.450000000001 4819.450000000001 4819.450000000001 ZT4-7 4548.9 4548.9 4548.9 ZT8-11 4553.549999999999 4553.549999999999 4553.549999999999 ZT12-15 4311.549999999999 4311.549999999999 4311.549999999999 ZT16-19 4657.95 4657.95 4657.95 ZT20-23 5298.7 5298.7 5298.7