condition mean min max ZT0-3 123.175425 108.24885 138.102 ZT4-7 123.0625 123.0625 123.0625 ZT8-11 217.172 217.172 217.172 ZT12-15 0 0 0 ZT16-19 281.283 281.283 281.283 ZT20-23 231.1685 231.1685 231.1685