condition mean min max ZT0-3 0.12317582499999999 0.10909365 0.137258 ZT4-7 0.202171 0.202171 0.202171 ZT8-11 0.626077 0.626077 0.626077 ZT12-15 0 0 0 ZT16-19 0.38303 0.38303 0.38303 ZT20-23 0.323249 0.323249 0.323249