Question 1203978
i found a calculator online at <a href = "https://statpages.info/anova1sm.html" target = "_blank">https://statpages.info/anova1sm.html</a>that does the analysis you are looking for.
it works off the mean and the standard deviation, i.e. uses summarized data.
i used the summarized data you had and got similar results.
this indicates to me that the results were consistent with what you got.
it also does the sample to sample posthoc analysis.
the results as shown below.


group 1 was line A
group 2 was line B
group 3 was line C.


<img src = "http://theo.x10hosting.com/2023/100101.jpg">


the results indicate that line A to line B are statistically different from each other because the p-value was .0037 which is less than .01.


standard deviation = square root of variance, so i took the square root of the variance given and used that as input to the calculator.
i round to 6 decimal digits which is usually enough for accurate readings.