the method and statistical base have been through a thorough review and it has been concluded that the indicators undoubtedly provide a more accurate picture of the real environmental impacts than is the case for other existing indicators based only on waste volumes.

Write the above sentence using proper case.
The method and statistical base have been through a thorough review and it has been concluded that the indicators undoubtedly provide a more accurate picture of the real environmental impacts than is the case for other existing indicators based only on waste volumes.