condition mean min max ZT0-3 1026.51 990.645 1062.375 ZT4-7 922.769 922.769 922.769 ZT8-11 595.0575 595.0575 595.0575 ZT12-15 0 0 0 ZT16-19 1021.4270000000001 1021.4270000000001 1021.4270000000001 ZT20-23 1053.5700000000002 1053.5700000000002 1053.5700000000002