21.   Thousands more do not seek shelter, but no reliable estimates exist for those on the street.

22.   Western diplomats, many of whom never leave their compounds for security reasons, said it was too early to give any reliable estimate.

23.   Witnesses reported seeing bodies in the streets, but there were no reliable estimates of casualties.

24.   Aid workers said scores of civilians have been injured, although no one could give a reliable estimate.

25.   He said there currently is no reliable estimate of the atmospheric levels of NOX.

26.   No reliable estimates are available for the number of cases of West Nile encephalitis that occur worldwide.

27.   Prior to harvesting, a pre-felling forest inventory will be prepared to provide reliable estimates of the trees in a targetted area.

28.   Reliable estimates for the rest of the world are not available, but researchers say the problem is escalating across the globe.

29.   Reporters have been blocked from the town, and no reliable estimates were available on casualties.

30.   The resolution stated that it was unclear how many minke whales are in the northeastern Atlantic, and until a reliable estimate is available no hunt should be permitted.