<Tr> <Td> October 2017 - December 2017 </Td> <Td> 7.8% </Td> </Tr> <Tr> <Td> January 2018 - March 2018 </Td> <Td> 7.6% </Td> </Tr> <Table> <Tr> <Th> Quarter </Th> <Th> Interest Rate </Th> </Tr> <Tr> <Td> April 2018 - June 2018 </Td> <Td> 7.6% </Td> </Tr> <Tr> <Td> July 2018 - September 2018 </Td> <Td> 7.6% <P> <October 2018 - December 2018 </P> </Td> <Td>> </Td> </Tr> </Table> <Tr> <Th> Quarter </Th> <Th> Interest Rate </Th> </Tr>

What is the rate of interest in ppf