condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0240064 0.0240064 0.0240064 ZT8-11 0.0196018 0.0196018 0.0196018 ZT12-15 0.0 0.0 0.0 ZT16-19 0.06307660000000001 0.06307660000000001 0.06307660000000001 ZT20-23 0.0730323 0.0730323 0.0730323