Fixed avg_losses-stats extract [skip CI]
Fixed avg_losses-stats extract [skip CI]


Former-commit-id: aea4ddbfc65139ac9f3ca7e3b657f140a59e20c4 [formerly e623ee80fb2d9372803edbb94c9b42962ad76759]
Former-commit-id: ba58329f38e78dafb295f240b7e82ae0924e5ef0
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine