35.5,34.8,34.7,35.0,34.9,35.2,34.7,35.4,34.8,35.0,34.7,35.3,34.7,35.7,34.9,35.0,这是回弹仪测的16个数,怎么换算成强度呢?c35混凝土合格吗?