Q-Q Plot ARIMA Residuals

Hello everyone,

I have used the auto.arima function with my data (n=156, frequency = 52) The residuals look like this:

The corresponding Q-Q plot shows the following progression:

Due to the one year's lead time and the small amount of data, the qline() is not lying on the points correctly.

However, if I take away the first year of residuals and look at the last two years only (n=104), the qqplot() looks like this:

In my opinion, this corresponds more to the "target output". My question would be: Can I simply leave out the one year in the plot? And if not, how should I interpret the actual Q-QPlot and what exactly does it say?

Thank you very much for your help.

Best regards

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