condition mean min max ZT0-3 70.820359 70.820359 70.820359 ZT4-7 57.939752999999996 57.939752999999996 57.939752999999996 ZT8-11 60.363251000000005 60.363251000000005 60.363251000000005 ZT12-15 81.9235395 81.9235395 81.9235395 ZT16-19 82.947889 82.947889 82.947889 ZT20-23 99.86594600000001 99.86594600000001 99.86594600000001