condition mean min max ZT0-3 1250.55 1250.55 1250.55 ZT4-7 1195.4 1195.4 1195.4 ZT8-11 1107.25 1107.25 1107.25 ZT12-15 840.5 840.5 840.5 ZT16-19 905.0 905.0 905.0 ZT20-23 1135.85 1135.85 1135.85