%    start time	      end time	      duration	      low freq	     high freq	
        181.615	        181.624	          0.009	      11131.803	      26524.585	
        258.629	        258.637	          0.008	      10304.234	      27683.182	
        258.744	        258.753	          0.009	      10635.261	      27517.668	
        259.587	        259.593	          0.006	      10635.261	      28345.237	
        298.178	        298.183	          0.005	      12538.670	      29586.591	
        310.025	        310.030	          0.005	      14276.565	      25200.475	
        310.857	        310.861	          0.004	      10386.991	      19821.277	
        381.892	        381.898	          0.007	      12124.885	      44648.346