condition mean min max ZT0-3 4272.0 4272.0 4272.0 ZT4-7 4943.0 4943.0 4943.0 ZT8-11 4760.549999999999 4760.549999999999 4760.549999999999 ZT12-15 4144.95 4144.95 4144.95 ZT16-19 3561.05 3561.05 3561.05 ZT20-23 4154.049999999999 4154.049999999999 4154.049999999999