Source of variation

df

Diesel oil

SAE 40 used oil

SAE 50 used oil

p

f

p

f

p

f

Bacterial strain

2

0.002

s

0.010

s

0.009

s

Incubation period

3

<0.0001

s

<0.0001

s

<0.0001

s

Bacterial strain x Incubation period

11

<0.0001

s

<0.0001

s

<0.0001

s