condition mean min max ZT0-3 48.798901695000005 29.794986800000004 67.80281659 ZT4-7 89.03106648666666 69.24100284 108.82113013333333 ZT8-11 67.811694735 48.08676791333333 87.53662155666666 ZT12-15 38.374427 33.17975782333333 43.56909617666667 ZT16-19 66.22094666166667 53.439245883333335 79.00264744 ZT20-23 93.64308897500001 86.67630006 100.60987789