condition mean min max ZT0-3 0.01302948375 0.0 0.0260589675 ZT4-7 0.0828823935 0.0400518415 0.1257129455 ZT8-11 0.09234032375000001 0.0445965925 0.140084055 ZT12-15 0.03135395525 0.017311156499999997 0.045396754000000004 ZT16-19 0.0 0.0 0.0 ZT20-23 0.06405981300000001 0.0 0.12811962600000001