condition mean min max ZT0-3 98.52425 95.99525 101.05324999999999 ZT4-7 72.7997 72.7997 72.7997 ZT8-11 60.1 60.1 60.1 ZT12-15 0 0 0 ZT16-19 84.49265 84.49265 84.49265 ZT20-23 83.45054999999999 83.45054999999999 83.45054999999999