condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.04162435 0.04162435 0.04162435 ZT8-11 0.0 0.0 0.0 ZT12-15 0.041659575000000004 0.0411442 0.04217495 ZT16-19 0.0 0.0 0.0 ZT20-23 0.04443485 0.04443485 0.04443485