cmd/benchstat/testdata/smallSample.stdout - perf - Git at Google

   │    before    │              after              │
   │    sec/op    │    sec/op     vs base           │
 X   100.0n ± ∞ ¹   101.0n ± ∞ ¹  ~ (p=1.000 n=1) ²
 ¹ need >= 6 samples for confidence interval at level 0.95
 ² need >= 4 samples to detect a difference at alpha level 0.05
	│ before │ after │
	│ sec/op │ sec/op vs base │
	X 100.0n ± ∞ ¹ 101.0n ± ∞ ¹ ~ (p=1.000 n=1) ²
	¹ need >= 6 samples for confidence interval at level 0.95
	² need >= 4 samples to detect a difference at alpha level 0.05