condition mean min max ZT0-3 138.6725 138.6725 138.6725 ZT4-7 130.4155 130.4155 130.4155 ZT8-11 122.05449999999999 122.05449999999999 122.05449999999999 ZT12-15 113.53200000000001 113.53200000000001 113.53200000000001 ZT16-19 156.1245 156.1245 156.1245 ZT20-23 134.4225 134.4225 134.4225