condition mean min max ZT0-3 296.493 278.444 317.9305 ZT4-7 284.73900000000003 284.73900000000003 284.73900000000003 ZT8-11 293.19 293.19 293.19 ZT12-15 309.198 269.3435 349.0525 ZT16-19 339.784 339.784 339.784 ZT20-23 306.358 306.358 306.358