condition mean min max ZT0-3 0.6316965 0.3357565 0.9276365 ZT4-7 1.1464465000000001 1.1464465000000001 1.1464465000000001 ZT8-11 1.005064 1.005064 1.005064 ZT12-15 0 0 0 ZT16-19 1.2540749999999998 1.2540749999999998 1.2540749999999998 ZT20-23 0.7300545 0.7300545 0.7300545