condition mean min max ZT0-3 10.634773 10.634773 10.634773 ZT4-7 10.635345000000001 10.635345000000001 10.635345000000001 ZT8-11 10.504772500000001 10.504772500000001 10.504772500000001 ZT12-15 11.3440175 11.3440175 11.3440175 ZT16-19 10.040048500000001 10.040048500000001 10.040048500000001 ZT20-23 9.670252000000001 9.670252000000001 9.670252000000001