condition mean min max ZT0-3 9.009405000000001 8.86346 9.15535 ZT4-7 10.99025 10.99025 10.99025 ZT8-11 12.322 12.322 12.322 ZT12-15 0 0 0 ZT16-19 11.28465 11.28465 11.28465 ZT20-23 10.670300000000001 10.670300000000001 10.670300000000001