The database currently contains data for Maass newforms on $\Gamma_0(N)$ of weight 0 with trivial character and Laplace eigenvalue $\lambda = \frac14 + R^2$ that lie primarily in the ranges:
• $1\le N \le 10$ and $0<R\le 10$;
• prime $100 < N < 250$ and $0<R\le 2$;
• prime $250 < N < 1000$ and $0<R\le 1$.
The database is not necessarily complete in these ranges, but it contains most of the Maass newforms with these parameters as well as examples with larger values of $R$ for small $N$.
For $N=1$ the database is believed to be complete for $0<R<30$, but there are some missing values immediately beyond that range.