condition mean min max ZT0-3 70.00874999999999 70.00874999999999 70.00874999999999 ZT4-7 58.66335 58.66335 58.66335 ZT8-11 50.44215 50.44215 50.44215 ZT12-15 53.63235 53.63235 53.63235 ZT16-19 65.13055 65.13055 65.13055 ZT20-23 67.11035000000001 67.11035000000001 67.11035000000001