gmx resources inc - niobrara overview, page-7

It doesn't seem to be gleaned from confidential email. They seem to suggest that that's the figure Samson have reported to the market:

"Samson Oil & Gas Limited USA has recently reported a successful Niobrara test with the drilling of the Defender US 33 #3-29H. The well is currently on pump and producing between 300-400 BBLs per day with a 60-65% oil cut. Recent management comments indicate optimism for improved performance."