condition mean min max ZT0-3 211.00375 201.58999999999997 220.41750000000002 ZT4-7 243.6415 243.6415 243.6415 ZT8-11 195.3965 195.3965 195.3965 ZT12-15 0 0 0 ZT16-19 167.98250000000002 167.98250000000002 167.98250000000002 ZT20-23 205.249 205.249 205.249