condition mean min max ZT0-3 987.25 987.25 987.25 ZT4-7 1027.7 1027.7 1027.7 ZT8-11 837.2 837.2 837.2 ZT12-15 803.15 803.15 803.15 ZT16-19 860.8499999999999 860.8499999999999 860.8499999999999 ZT20-23 994.6 994.6 994.6