condition mean min max ZT0-3 1.2902912500000001 0.8003075 1.780275 ZT4-7 0.967141 0.967141 0.967141 ZT8-11 0.489135 0.489135 0.489135 ZT12-15 0 0 0 ZT16-19 0.6364380000000001 0.6364380000000001 0.6364380000000001 ZT20-23 0.6396445 0.6396445 0.6396445