condition mean min max ZT0-3 5.348048500000001 0.59842 14.523800000000001 ZT4-7 6.800105 6.800105 6.800105 ZT8-11 1.335566 1.335566 1.335566 ZT12-15 1.5690365000000002 0.829413 2.30866 ZT16-19 0.3917335 0.3917335 0.3917335 ZT20-23 0.0808485 0.0808485 0.0808485