condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.006527132 0.0 0.013054264 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.00800098525 0.0 0.0160019705 ZT20-23 0.0 0.0 0.0