condition mean min max ZT0-3 11.153632390750001 10.1267580115 12.180506770000001 ZT4-7 13.606337440833334 10.827185218333334 16.385489663333335 ZT8-11 15.31101941 12.55442765 18.06761117 ZT12-15 11.871677224833332 10.725780739666666 13.017573709999999 ZT16-19 13.555440005000001 13.240411673333334 13.870468336666667 ZT20-23 10.218728284666666 7.312416579333333 13.12503999