condition mean min max ZT0-3 76.9267 21.21935 118.55539999999999 ZT4-7 29.197200000000002 29.197200000000002 29.197200000000002 ZT8-11 16.49205 16.49205 16.49205 ZT12-15 23.11914 12.352129999999999 33.88615 ZT16-19 43.991600000000005 43.991600000000005 43.991600000000005 ZT20-23 95.43154999999999 95.43154999999999 95.43154999999999