| group |  condition |  fitness |  t score |    | 
 | mixed community |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 1 |  +0.0 |  +0.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 2 |  +0.2 |  +1.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 3 |  +0.1 |  +0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 4 |  -0.4 |  -1.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 5 |  -0.1 |  -0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment A, time point 6 |  -0.7 |  -3.2 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 1 |  -0.1 |  -0.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 2 |  -0.2 |  -0.8 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 3 |  -0.2 |  -1.0 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 4 |  -0.1 |  -0.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 5 |  -0.4 |  -2.3 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment B, time point 6 |  -0.7 |  -2.9 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 1 |  +0.1 |  +0.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 2 |  -0.3 |  -1.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 3 |  +0.1 |  +0.5 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 4 |  -0.0 |  -0.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 5 |  -0.1 |  -0.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 6 |  +0.0 |  +0.2 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MED4; Experiment C, time point 7 |  -0.0 |  -0.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 1 |  +0.0 |  +0.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 2 |  -0.0 |  -0.0 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 3 |  -0.1 |  -0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 4 |  +0.1 |  +0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 5 |  -0.3 |  -1.5 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment A, time point 6 |  -0.0 |  -0.2 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment B, time point 1 |  +0.1 |  +0.3 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment B, time point 2 |  -0.2 |  -0.7 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment B, time point 3 |  -0.1 |  -0.3 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 1 |  +0.2 |  +0.9 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 2 |  +0.0 |  +0.1 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 3 |  +0.1 |  +0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 4 |  -0.1 |  -0.6 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 5 |  +0.1 |  +0.2 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 6 |  +0.1 |  +0.3 |   compare | 
  |  Mixed culture with Prochlorococcus marinus str. MIT9313; Experiment C, time point 7 |  +0.1 |  +0.4 |   compare | 
 | pro99_seawater |  monoculture; Experiment A, time point 1 |  -0.2 |  -1.1 |   compare | 
  |  monoculture; Experiment A, time point 2 |  -0.2 |  -1.0 |   compare | 
  |  monoculture; Experiment A, time point 3 |  -0.4 |  -1.8 |   compare | 
  |  monoculture; Experiment A, time point 4 |  -0.3 |  -1.5 |   compare | 
  |  monoculture; Experiment A, time point 5 |  +0.1 |  +0.3 |   compare | 
  |  monoculture; Experiment A, time point 6 |  +0.0 |  +0.0 |   compare | 
  |  monoculture; Experiment B, time point 2 |  -0.2 |  -1.1 |   compare | 
  |  monoculture; Experiment B, time point 3 |  -0.2 |  -1.1 |   compare | 
  |  monoculture; Experiment B, time point 4 |  -0.5 |  -1.9 |   compare | 
  |  monoculture; Experiment B, time point 5 |  -0.1 |  -0.5 |   compare | 
  |  monoculture; Experiment B, time point 6 |  -0.3 |  -1.0 |   compare | 
  |  monoculture; Experiment C, time point 1 |  -0.6 |  -3.2 |   compare | 
  |  monoculture; Experiment C, time point 2 |  -0.1 |  -0.8 |   compare | 
  |  monoculture; Experiment C, time point 3 |  -0.4 |  -1.9 |   compare | 
  |  monoculture; Experiment C, time point 4 |  -0.3 |  -1.4 |   compare | 
  |  monoculture; Experiment C, time point 5 |  -0.6 |  -2.9 |   compare | 
  |  monoculture; Experiment C, time point 6 |  -0.0 |  -0.1 |   compare |