%    start time	      end time	      duration	      low freq	     high freq	
        210.556	        210.566	          0.010	       3187.141	      28593.508	
        466.864	        466.873	          0.009	       3021.627	      32483.082	
        509.504	        509.510	          0.006	      14607.592	      29421.077	
        585.199	        585.204	          0.006	       3352.654	      20317.818