condition mean min max ZT0-3 0.48564522600000004 0.17604845600000002 0.795241996 ZT4-7 4.48128084475 2.6949299955 6.267631694 ZT8-11 9.25244171125 8.021861691 10.4830217315 ZT12-15 9.820621784 9.5329682745 10.1082752935 ZT16-19 7.999578413 6.946726937999999 9.052429888 ZT20-23 12.7248448525 11.123114615 14.32657509