Db values in the elevation charts of antennas

[vramanaiah]

i have question regarding the elevation and the azimuth charts found in the antenna datasheets.. 

The Db loss values are given with higher values near the antennae and the 0dB is shown farther from the antennae..  Shouldn't this be the other way around..?

[Kayle Miller]

The short answer is no and here is a document that goes into great detail on Antenna Patterns

http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-antennas-accessories/prod_white_paper0900aecd806a1a3e.html