condition mean min max ZT0-3 48.99005 48.99005 48.99005 ZT4-7 43.1103 43.1103 43.1103 ZT8-11 43.407250000000005 43.407250000000005 43.407250000000005 ZT12-15 50.76255 50.76255 50.76255 ZT16-19 58.08905 58.08905 58.08905 ZT20-23 45.955799999999996 45.955799999999996 45.955799999999996