Panel vs cross section + R package?

Hi, i have a question please on R choice package (plm?) regarding methodology(panel vs cross section). Here an example of data with several fixed effect features (the Xs) and Y is the dependent variable. Question: which is the appropriate methodology and which R package? Thank you.
|Y |city |climatic |feature_1|feature_2|feature_3|
|score_city_1|city_1|temperature| | | |
|score_city_1|city_1|humidity | | | |
|score_city_2|city_2|temperature| | | |
|score_city_2|city_2|humidity | | | |
|score_city_3|city_3|temperature | | | |
|score_city_3|city_3|humidity | | | |

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