myTest1which has a flakiness score of 0.1. This means that if this test failed against 10 different commits, in 1 of those 10 commits, that failure was not a true failure. If you run that test repeatedly, it eventually passes. This test is slightly flaky.
myTest2has a flakiness score of 0.9. If this test failed against 10 different commits, in 9 out of those 10 commits, you saw a false failure that retry will yield a passing result. That test is very flaky and should be fixed.