HS1101 Humidity sensor - Get accurate readings...

I just get a HS1101 Humidity sensor and I am trying to get some accurate readings from it...

I try it first to connect it directly in an analog port of my Arduino (see page 2 in http://www.parallax.com/Portals/0/Downloads/docs/prod/sens/27920-HS1101-v1.0.pdf)

The example code in the same pdf is for Basic Stamp 2 and it uses RCTime for getting the value...

I am not sure how to translate the readings (in my test was 0-18 values) in an accurate humidity %...

Can someone help me?

Thank you

See this page:

http://www.phanderson.com/picaxe/rh_count.html

It uses the 555 approach... converts the analog input (readings) to something else...

For first I am looking for a direct connection way... to get the readings...