ERC’s 2P reserves estimates were 4143 million boe (92% oil) compared to 3619 million boe (93% oil) 2P reserves reported by TAG Oil on 31 March 2016. The increase in the company’s reserves of approximately 14% is attributable to the following factors: an approximate 27% increase in annual reserves revisions of 962 million boe, which is primarily due to improved recovery, technical revisions and reclassification from the no reserves assigned (NRA) category; and an approximate 12% decrease due to 438 million boe produced over the 12 month period in fiscal year 2017.