Individual samples are subject to the following limitations: Provided, that the averages for the entire lot are within the tolerances specified for the grade.
    
    
        
        (a) 
         For a tolerance of 10 percent or more; individual samples in any lot may contain not more than one and one-half times the tolerance specified, except that 1 decayed or 1 seriously damaged specimen may be permitted in any sample.
     
    
        
        (b) 
         For a tolerance of less than 10 percent, individual samples in any lot may contain not more than double the tolerance specified, except that 1 decayed specimen may be permitted in any sample.