This password protected dataset contains the National Lightning Detection Network (NLDN) data for a 100km radius of Mt. Lemmon during the CuPIDO project period (July-August 2006). These data contain NLDN cloud-to-ground strokes and NLDN LF cloud event data with the following parameters: date, time, latitude, longitude, polarity and peak current, lightning event type, chi square value, and length of the semi-major axis of the error ellipse. This dataset was made available from Vaisala, Inc. free of charge to CuPIDO investigators ONLY and all users are required to abide by the Vaisala NLDN data policy to researchers: (1) These data may not be sold or shared with another party outside CuPIDO; (2) These data may not be used for direct comparisons with other lightning detection networks without approval of Vaisala, Inc.; 3) Prior to submission of any publication using these data, Vaisala, Inc. must be given the opportunity to review elements of the manuscript related to Vaisala, Inc. for technical accuracy; (4) Vaisala, Inc. must be acknowledged as the source of the Information and data; and (5) There can be no proprietary or commercial restrictions on the research results and all investigator(s) must be directly associated with an academic or research organization. Any questions on this data policy should be addressed directly to the Vaisala, Inc. Point of contact. Please contact Steve Williams (NCAR/EOL) via e-mail (sfw at ucar dot edu) with your acceptance of the above Vaisala, Inc. NLDN data policy to obtain access to these data.