Stim only supports Pauli noises like DEPOLARIZE1, DEPOLARIZE2, X_ERROR, Z_ERROR. Given T1, T2 values of qubits, how would I adjust a Stim circuit file to reflect these? For instance, we might have qubits with different T1 and T2 values. How would I decide the magnitudes of the DEPOLARIZE1 errors on them when they are idle?

We've read this post Incorporating idling errors while using stim but a more detailed explanation would be helpful. Thanks!