condition mean min max ZT0-3 136.85399999999998 131.80349999999999 141.90449999999998 ZT4-7 235.6815 235.6815 235.6815 ZT8-11 353.484 353.484 353.484 ZT12-15 0 0 0 ZT16-19 216.997 216.997 216.997 ZT20-23 203.6055 203.6055 203.6055