The Winter Haze Intensive Tracer Experiment (WHITEX) 

This study was established to study the visibility impacts of emissions from the Navajo Generating Station.  The database contains data from 13 locations which sampled from 1/1/87 – 2/18/87.  Samples were collected every 6, 12, and 24 hours depending on the site and sampler.  The particulate samples were analyzed for PM2.5 mass and its elemental constituents, organics, ions, and light absorption.