condition mean min max ZT0-3 240.95 240.95 240.95 ZT4-7 249.0 249.0 249.0 ZT8-11 261.15 261.15 261.15 ZT12-15 221.55 221.55 221.55 ZT16-19 201.64999999999998 201.64999999999998 201.64999999999998 ZT20-23 242.3 242.3 242.3