condition mean min max ZT0-3 49.879724679999995 18.50295822 81.25649114 ZT4-7 100.9371535425 96.676056985 105.1982501 ZT8-11 51.919555460000005 38.34428006 65.49483086000001 ZT12-15 21.5596026125 17.712783655 25.40642157 ZT16-19 31.019300272499997 27.507474979999998 34.531125564999996 ZT20-23 48.317640357500004 46.373543080000005 50.261737635