condition mean min max ZT0-3 51.8836 51.8836 51.8836 ZT4-7 37.111999999999995 37.111999999999995 37.111999999999995 ZT8-11 24.30395 24.30395 24.30395 ZT12-15 24.4541 24.4541 24.4541 ZT16-19 39.9206 39.9206 39.9206 ZT20-23 47.793549999999996 47.793549999999996 47.793549999999996