condition mean min max ZT0-3 60.380059 60.380059 60.380059 ZT4-7 43.546003999999996 43.546003999999996 43.546003999999996 ZT8-11 54.207285 54.207285 54.207285 ZT12-15 55.335417 55.335417 55.335417 ZT16-19 61.920010000000005 61.920010000000005 61.920010000000005 ZT20-23 58.7322315 58.7322315 58.7322315