condition mean min max ZT0-3 0.7319880000000001 0.378181 1.085795 ZT4-7 0.991544 0.991544 0.991544 ZT8-11 0.18939 0.18939 0.18939 ZT12-15 0 0 0 ZT16-19 1.3369315 1.3369315 1.3369315 ZT20-23 1.249095 1.249095 1.249095