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. 2009 Jan;181(1):225–234. doi: 10.1534/genetics.107.085225

TABLE 3.

Analysis of the fitness increase for each bacteriophage species relative to the ancestral population in the selected environment (growth at 43°), using a Student's t-test

Species Line Inline graphic t-value d.f. P-value
MS2 1 9.92 49.363 3 1.83e-05
2 8.87 39.875 3 3.47e-05
3 9.24 26.056 3 0.000124
NL95 1 1.36 8.557 3 0.00335
2 3.33 26.995 3 0.000112
3 3.87 20.746 3 0.000245
fr 1 6.16 52.479 3 1.52e-05

Inline graphic is the mean relative fitness across replicates. d.f., degrees of freedom.