condition mean min max ZT0-3 98.992293435 98.78541678 99.19917009 ZT4-7 80.48525262 79.49878068 81.47172456 ZT8-11 81.53592605 75.21989446 87.85195764 ZT12-15 98.173302705 97.22818903333334 99.11841637666666 ZT16-19 105.75346612666667 105.08037982 106.42655243333334 ZT20-23 99.58020701500001 99.23781546000001 99.92259857