condition mean min max ZT0-3 86.411536 86.411536 86.411536 ZT4-7 102.93082150000001 102.93082150000001 102.93082150000001 ZT8-11 105.98201549999999 105.98201549999999 105.98201549999999 ZT12-15 95.3127345 95.3127345 95.3127345 ZT16-19 110.560312 110.560312 110.560312 ZT20-23 127.33269949999999 127.33269949999999 127.33269949999999