condition mean min max ZT0-3 0.097099 0.097099 0.097099 ZT4-7 0.2702795 0.2702795 0.2702795 ZT8-11 0.512259 0.512259 0.512259 ZT12-15 0.311098 0.311098 0.311098 ZT16-19 0.701275 0.701275 0.701275 ZT20-23 0.1161115 0.1161115 0.1161115