condition mean min max ZT0-3 0.93102225 0.529206 1.3328385 ZT4-7 1.637345 1.637345 1.637345 ZT8-11 0.7996015 0.7996015 0.7996015 ZT12-15 0 0 0 ZT16-19 1.310825 1.310825 1.310825 ZT20-23 1.4941900000000001 1.4941900000000001 1.4941900000000001