The All India Consumer Price Indices for last 6 months are as:
2016 September:277
2016 Octo0ber : 278
2016 November: 277 ==== Average for the 3 months : 277.33
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2016 December: 275
2017 January: 274
2017 February: 274 ===== Average for the 3 months:274.33