condition mean min max ZT0-3 0.35414900000000005 0.35414900000000005 0.35414900000000005 ZT4-7 0.16073199999999999 0.16073199999999999 0.16073199999999999 ZT8-11 0.200571 0.200571 0.200571 ZT12-15 0.17491825 0.17491825 0.17491825 ZT16-19 0.1244678 0.1244678 0.1244678 ZT20-23 0.7362150000000001 0.7362150000000001 0.7362150000000001