condition mean min max ZT0-3 93.732125 71.91125 115.553 ZT4-7 43.47025 43.47025 43.47025 ZT8-11 21.446350000000002 21.446350000000002 21.446350000000002 ZT12-15 0 0 0 ZT16-19 32.27505 32.27505 32.27505 ZT20-23 34.432100000000005 34.432100000000005 34.432100000000005