expt  treatment_rep_min  
2     ambient_15min_A    
2     ambient_15min_B    
2     ambient_15min_C    
2     ambient_30min_A    
2     ambient_30min_B    
2     ambient_30min_C    
2     ambient_45min_A    
2     ambient_45min_B    
2     ambient_45min_C    
2     high_15min_A       
2     high_15min_B       
2     high_15min_C       
2     high_30min_A       
2     high_30min_B       
2     high_30min_C       
2     high_45min_A       
2     high_45min_B       
2     high_45min_C       
2     moderate_15min_A   
2     moderate_15min_B   
2     moderate_15min_C   
2     moderate_30min_A   
2     moderate_30min_B   
2     moderate_30min_C   
2     moderate_45min_A   
2     moderate_45min_B   
2     moderate_45min_C   
3     ambient_30min_A    
3     ambient_30min_B    
3     ambient_30min_C    
3     ambient_60min_A    
3     ambient_60min_B    
3     ambient_60min_C    
3     ambient_90min_A    
3     ambient_90min_B    
3     ambient_90min_C    
3     high_30min_A       
3     high_30min_B       
3     high_30min_C       
3     high_60min_A       
3     high_60min_B       
3     high_60min_C       
3     high_90min_A       
3     high_90min_B       
3     high_90min_C       
3     moderate_30min_A   
3     moderate_30min_B   
3     moderate_30min_C   
3     moderate_60min_A   
3     moderate_60min_B   
3     moderate_60min_C   
3     moderate_90min_A   
3     moderate_90min_B   
3     moderate_90min_C