fixed mean/quantile creations
fixed mean/quantile creations


Former-commit-id: 581da4709a21b50b3d534d3e5e71232076107325 [formerly 04a26d518101a4b20484dda28528010652125e97]
Former-commit-id: 4dcd30c0ab1e23f63befd8f180b741fe7336700c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine