condition mean min max ZT0-3 49.775675 47.291 52.26035 ZT4-7 40.03075 40.03075 40.03075 ZT8-11 145.894 145.894 145.894 ZT12-15 0 0 0 ZT16-19 151.385 151.385 151.385 ZT20-23 92.74180000000001 92.74180000000001 92.74180000000001