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Ranchi, Oct 21 (PTI) The noise level in Ranchi’s designated ‘silence zone’ – Old High Court – touched the 78-decibel mark on Diwali, a spike of nearly 56 per cent, an official said on Tuesday.

The Old High Court area in Doranda locality registered an average noise level of 78 decibel between 6 am and 10 pm on Monday, according to data released by the Jharkhand State Pollution Control Board (JSPCB).

It also remained high at 72 decibel between 10 pm on Monday to 6 am on Tuesday, JSPCB said.

The permissible limit for silence zones is 50 decibel during the day (6 am to 10 pm) and 40 decibel at night (10 pm to 6 am), the official said.

The JSPCB measures noise levels at four locations – Old High Court (silence zone), Albert Ekka Chowk (commercial zone), Ashok Nagar

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