Crude/NG spread has blown out again

Crude is at 100 day MA, and NG has dropped 3 days in a row. The ratio is 12.25; since NG changes so much with the seasons I keep track of a seasonally adjusted ratio - which is 11 now. This is up from a ratio of 6 in late December, and down from 14 in August. Anyway, I think the ratio is at a maximum, at least locally.