| group |  condition |  fitness |  t score |    | 
 | hydrogen no stress control |  H2 no stress control |  -5.1 |  -6.1 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 FREE |  -5.1 |  -3.3 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 FREE |  -4.8 |  -4.2 |   compare | 
 | nitrogen source |  H2 N-free with 10mM D-glucosamine |  -4.8 |  -2.9 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -4.2 |  -3.3 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 FREE |  -4.2 |  -4.3 |   compare | 
 | planktonic |  H2 pooled triplicate planktonic cells |  -4.1 |  -2.7 |   compare | 
 | rich t2 |  H2 McCas, 5g/L bicarb, 40 psi H2CO2 |  -4.0 |  -2.3 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2 |  -4.0 |  -4.2 |   compare | 
 | stress |  McCas_formate_complete Spiramycin 0.1 mM |  -3.9 |  -2.4 |   compare | 
 | nitrogen source |  Formate N-free with 2mM Adenosine |  -3.9 |  -2.5 |   compare | 
 | iron |  Iron excess (2.5x) , H2 media |  -3.6 |  -4.0 |   compare | 
 | iron |  Iron limitation (0.2x), H2 media |  -3.5 |  -4.8 |   compare | 
 | rich t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 FREE |  -3.5 |  -3.7 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -3.5 |  -3.3 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2 |  -3.4 |  -3.0 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Casamino Acid FREE |  -3.1 |  -2.7 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -3.1 |  -4.6 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2 |  -3.1 |  -4.0 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Casamino Acid FREE |  -3.0 |  -3.2 |   compare |