condition mean min max ZT0-3 306.33138 306.33138 306.33138 ZT4-7 418.462826 418.462826 418.462826 ZT8-11 375.42548750000003 375.42548750000003 375.42548750000003 ZT12-15 235.065245 235.065245 235.065245 ZT16-19 279.399684 279.399684 279.399684 ZT20-23 269.7112235 269.7112235 269.7112235