condition mean min max ZT0-3 99.56423681999999 94.33510973999998 104.7933639 ZT4-7 20.7344682325 20.121377435 21.34755903 ZT8-11 20.1443152 18.910785150000002 21.37784525 ZT12-15 6.851011177 3.1193161665 10.582706187500001 ZT16-19 3.6252970424999997 3.352308229 3.8982858559999998 ZT20-23 5.988702716000001 5.128078006 6.849327426