condition mean min max ZT0-3 77.8718 70.75739999999999 84.9862 ZT4-7 67.4103 67.4103 67.4103 ZT8-11 53.0881 53.0881 53.0881 ZT12-15 0 0 0 ZT16-19 66.11865 66.11865 66.11865 ZT20-23 75.72890000000001 75.72890000000001 75.72890000000001