condition mean min max ZT0-3 61.01981 61.01981 61.01981 ZT4-7 25.919629 25.919629 25.919629 ZT8-11 40.641591 40.641591 40.641591 ZT12-15 51.098977000000005 51.098977000000005 51.098977000000005 ZT16-19 65.3848745 65.3848745 65.3848745 ZT20-23 95.4198655 95.4198655 95.4198655