condition mean min max ZT0-3 612.8165 612.8165 612.8165 ZT4-7 916.1969999999999 916.1969999999999 916.1969999999999 ZT8-11 307.262 307.262 307.262 ZT12-15 275.4465 275.4465 275.4465 ZT16-19 67.462 67.462 67.462 ZT20-23 194.19150000000002 194.19150000000002 194.19150000000002