condition mean min max ZT0-3 311.0475 311.0475 311.0475 ZT4-7 266.57849999999996 266.57849999999996 266.57849999999996 ZT8-11 327.3345 327.3345 327.3345 ZT12-15 220.394 220.394 220.394 ZT16-19 362.997 362.997 362.997 ZT20-23 298.4845 298.4845 298.4845