condition mean min max ZT0-3 63.0132 63.0132 63.0132 ZT4-7 58.9958 58.9958 58.9958 ZT8-11 57.159000000000006 57.159000000000006 57.159000000000006 ZT12-15 56.43305 56.43305 56.43305 ZT16-19 78.15835 78.15835 78.15835 ZT20-23 68.6499 68.6499 68.6499