condition mean min max ZT0-3 0.0384369 0.0384369 0.0384369 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.01542235 0.01542235 0.01542235 ZT20-23 0.0 0.0 0.0