condition mean min max ZT0-3 1250.3 1250.3 1250.3 ZT4-7 1056.2 1056.2 1056.2 ZT8-11 960.6 960.6 960.6 ZT12-15 1006.3499999999999 1006.3499999999999 1006.3499999999999 ZT16-19 1091.9 1091.9 1091.9 ZT20-23 1268.0500000000002 1268.0500000000002 1268.0500000000002