condition mean min max ZT0-3 91.525025 86.90895 96.1411 ZT4-7 131.89 131.89 131.89 ZT8-11 145.524 145.524 145.524 ZT12-15 0 0 0 ZT16-19 106.902 106.902 106.902 ZT20-23 113.068 113.068 113.068