condition mean min max ZT0-3 9.875088 9.875088 9.875088 ZT4-7 10.359525999999999 10.359525999999999 10.359525999999999 ZT8-11 10.330985 10.330985 10.330985 ZT12-15 9.600070500000001 9.600070500000001 9.600070500000001 ZT16-19 9.6574585 9.6574585 9.6574585 ZT20-23 10.826664000000001 10.826664000000001 10.826664000000001