Return a sequence of dicts storing metadata about all available indices.

def _indicator_table():
    """Return a sequence of dicts storing metadata about all available indices."""
    from xclim import temperature, precip
    import inspect

    inds = _get_indicators([temperature, precip])
    table = []
    for ind in inds:
        # Apply default values
        args = {name: p.default for (name, p) in ind._sig.parameters.items() if p.default != inspect._empty}
        table.append(ind.json(args))
    return table