To further answer this question, the first poll conducted by a valid source came out. It doesn't divide the feelings of people by region, but rather by voters of different parties. Perhaps they'll provide other date in the upcoming days, but this is it for now:
What do you think of the sentence?
https://i.imgur.com/CRLBRCZ.pngWhat do you think of the sentence?
Red: the sentence is too soft; it should have been stricter.
Green/Blue: The sentence is fine.
Purple: The sentence is excessive; it should have been less.
Yellow: The sentence is excessive; they should have been freed.
What should the government do now?
https://i.imgur.com/iSVfuZD.pngWhat should the government do now?
Red: Appeal, and ask for a stricter sentence.
Green/Blue: Respect and guarantee the enforcement of the sentence.
Yellow: Grant an official pardon to all the people involved.
Source:
https://bit.ly/2IPUltOSo, as you see, the majority of people are happy with the sentence, with mostly just the alt-right (VOX), the green-left (Más País), the alt-left (UP) and the "other" voters being unhappy (albeit for different reasons). The "other" mostly refers to regionalist/nationalis/separatist parties, which includes the catalan ones which are obviously against the whole judiciary process... the "other" voters that support the court's decision are likely regionalist party voters from other places that are tired of the lack of loyalty of the catalan parties and are upset about how those parties always manage to use their presence in parliament to get benefits for Catalonia while their smaller regions are "abandoned".
All this is just an initial reaction, as the sentence came out yesterday... but it does give a good indication on where each party's sentiment is more or less at.
What's interesting is how the alt-left and the alt-right agree on something: they don't want a true separation of powers, and they want the judges to carry out their agenda.
My big takeaway is that these sentences, and the whole Catalonia issue in general, are successfully driving a wedge between the social democrats (PSOE) and the leftist party (UP). Also interesting to see that a clear majority of the conservative PP voters can live with these sentences.
What I also noticed is that PSOE and Cs are the closest on this issue. A lot of Spain's political troubles and failure to find a government would be solved if these two parties could come together and form a coalition.