永安药业严重异动是怎么计算的？

002365永安药业2025/5/15--2025/5/28连续10个交易日累计偏离值才75.04%怎么就严重异动了呢？

股票涨幅 深成指涨幅 每日偏离值 累计偏离值
9.99 % -1.62% 11.61% 11.61%
2.64 % -0.07% 2.71% 14.32%
9.99 % -0.08% 10.07% 24.39%
-0.71% 0.77% -1.48% 22.91%
10 % 0.44% 9.56% 32.47%
9.98 % -0.72% 10.7% 43.17%
9.99% -0.85% 10.84% 54.01%
6.48% -0.41% 6.89% 60.9%
3.27% -0.61% 3.88% 64.78%
10% -0.26% 10.26% 75.04%