condition mean min max ZT0-3 42.545625 42.545625 42.545625 ZT4-7 52.484821499999995 52.484821499999995 52.484821499999995 ZT8-11 52.535251 52.535251 52.535251 ZT12-15 46.404827 46.404827 46.404827 ZT16-19 39.162894 39.162894 39.162894 ZT20-23 44.1026685 44.1026685 44.1026685