condition mean min max ZT0-3 1.15119025 1.065261 1.2371195 ZT4-7 1.773345 1.773345 1.773345 ZT8-11 4.59238 4.59238 4.59238 ZT12-15 0 0 0 ZT16-19 4.77908 4.77908 4.77908 ZT20-23 2.42909 2.42909 2.42909