Differing reporting requirements. We usually get this question in regard to Chesapeake but it also is applicable to other Haynesville operating companies. The state requires production volumes reported at a specific pressure and temperature. Companies can measure their volumes based on slightly different parameters. Chesapeake uses the reporting pressure and temp mandated by the State of Oklahoma, the company's home state, to record and pay royalty. The volume reported on SONRIS is that using the Louisiana measuring requirements. The difference is very slight.