condition mean min max ZT0-3 24.769000000000002 23.611800000000002 25.9262 ZT4-7 24.06275 24.06275 24.06275 ZT8-11 16.1869 16.1869 16.1869 ZT12-15 0 0 0 ZT16-19 23.1582 23.1582 23.1582 ZT20-23 24.6261 24.6261 24.6261