condition mean min max ZT0-3 36.150999999999996 34.2709 38.0311 ZT4-7 19.42245 19.42245 19.42245 ZT8-11 34.64475 34.64475 34.64475 ZT12-15 0 0 0 ZT16-19 44.657799999999995 44.657799999999995 44.657799999999995 ZT20-23 39.90405 39.90405 39.90405