condition mean min max ZT0-3 3935.1000000000004 3935.1000000000004 3935.1000000000004 ZT4-7 4953.4 4953.4 4953.4 ZT8-11 5593.450000000001 5593.450000000001 5593.450000000001 ZT12-15 5597.549999999999 5597.549999999999 5597.549999999999 ZT16-19 4851.6 4851.6 4851.6 ZT20-23 4235.6 4235.6 4235.6