condition mean min max ZT0-3 0.7821859999999999 0.7821859999999999 0.7821859999999999 ZT4-7 0.9350229999999999 0.9350229999999999 0.9350229999999999 ZT8-11 1.1103459999999998 1.1103459999999998 1.1103459999999998 ZT12-15 0.34886249999999996 0.34886249999999996 0.34886249999999996 ZT16-19 0.8027505 0.8027505 0.8027505 ZT20-23 0.7082695 0.7082695 0.7082695