condition mean min max ZT0-3 62.4054 62.4054 62.4054 ZT4-7 54.54215 54.54215 54.54215 ZT8-11 51.18285 51.18285 51.18285 ZT12-15 43.6476 43.6476 43.6476 ZT16-19 54.54145 54.54145 54.54145 ZT20-23 56.49205 56.49205 56.49205