| group |  condition |  fitness |  t score |    | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -3.8 |  -5.9 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -3.6 |  -6.3 |   compare | 
 | nitrogen source |  H2 N-free with 2mM Adenosine |  -3.2 |  -3.8 |   compare | 
 | rich t2 |  H2 McCas, 5g/L bicarb, 40 psi H2CO2 |  -3.1 |  -4.8 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 Vitamin & Casamino Acid FREE |  -3.1 |  -6.0 |   compare | 
 | rich t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 FREE |  -3.1 |  -6.9 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 & Casamino Acid FREE |  -3.0 |  -6.3 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 & Casamino Acid FREE |  -3.0 |  -7.3 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 & Vitamin FREE |  -3.0 |  -5.8 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 FREE |  -3.0 |  -6.8 |   compare | 
 | nutrient t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 & Vitamin FREE |  -2.9 |  -4.9 |   compare | 
 | rich t2 |  H2 McCas, 2.5g/L bicarb, 200 mM MOPs, 40 psi H2CO2, SO4 FREE |  -2.9 |  -6.9 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 Vitamin & Casamino Acid FREE |  -2.9 |  -7.8 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 & Vitamin FREE |  -2.8 |  -5.2 |   compare | 
 | rich t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 FREE |  -2.8 |  -7.3 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 & Casamino Acid FREE |  -2.8 |  -6.2 |   compare | 
 | iron |  control, 1x iron with casaminos and vitamins, H2 media |  -2.7 |  -6.5 |   compare | 
 | nitrogen source |  Formate N-free with 2mM Adenosine |  -2.7 |  -4.2 |   compare | 
 | nutrient t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 Vitamin & Casamino Acid FREE |  -2.6 |  -7.6 |   compare | 
 | rich t2 |  Formate McCas, 2.5g/L bicarb, 200 mM MOPs, 20 psi N2CO2, SO4 FREE |  -2.5 |  -6.1 |   compare |