condition mean min max ZT0-3 47.5996 46.57145 48.627750000000006 ZT4-7 54.9925 54.9925 54.9925 ZT8-11 121.584 121.584 121.584 ZT12-15 0 0 0 ZT16-19 145.0025 145.0025 145.0025 ZT20-23 98.13825 98.13825 98.13825