condition mean min max ZT0-3 2886.3 2886.3 2886.3 ZT4-7 3164.4 3164.4 3164.4 ZT8-11 9498.3 9498.3 9498.3 ZT12-15 16947.1 16947.1 16947.1 ZT16-19 12881.0 12881.0 12881.0 ZT20-23 5041.85 5041.85 5041.85