<Tr> <Td> </Td> <Td_colspan="1"> 6 </Td> <Td_colspan="2"> 31 </Td> <Td_colspan="1"> September 25, 1985 </Td> <Td> May 21, 1986 </Td> <Td> 7 </Td> <Td> 21.8 </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 7 </Td> <Td_colspan="2"> 28 </Td> <Td_colspan="1"> September 24, 1986 </Td> <Td> May 6, 1987 </Td> <Td> 25 </Td> <Td> 17.2 </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 8 </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> September 23, 1987 </Td> <Td> March 30, 1988 </Td> <Td> 41 </Td> <Td> 14.3 </Td> <Td> </Td> </Tr> <Tr> <Td> </Td> <Td_colspan="1"> 9 </Td> <Td_colspan="2"> 22 </Td> <Td_colspan="1"> November 3, 1988 </Td> <Td> May 11, 1989 </Td> <Td> 69 </Td> <Td> 10.5 </Td> <Td> </Td> </Tr>

How many episodes on season 2 of the tunnel