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For example, one of the first organizations to use tree testing was ACC, a public-health service in New Zealand. When they redesigned their website a few years ago, they did a baseline test before they revised their site tree. Here's what they found:
| Tree | Overall score |
|---|---|
| Existing site | 30% |
| Revised site | 67% |
And the scores are only part of the story. Baselining the old tree also helps us find out:
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