condition mean min max ZT0-3 8.2162749215 6.775783898999999 9.656765944 ZT4-7 18.560589432500002 12.091988180000001 25.029190685 ZT8-11 58.931492812500004 52.2930817 65.569903925 ZT12-15 92.756937365 92.65049063000001 92.86338409999999 ZT16-19 90.99012881499999 88.1021337 93.87812393 ZT20-23 87.83122169750001 82.647362455 93.01508094