Project: POPSnet SGP
Creator: Elizabeth Asher 
Contact: elizabeth.asher@noaa.gov
Date Created: Jun 29, 2021

Summary: 
Portable Optical Particle Network Southern Great Plains (POPSnet-SGP) 1-sec size segregated aerosol concentration data from each POPSnet-SGP station (with its corresponding latitude and longitude, as well as date and time)  are provided. The instrument's temperature measured at the POPS laminar flow element (LFE) is also provided.

Units: NA (ARM-SGP Station name), Sec (Unix epoch), degrees Celsius, #/cm^3 (B1-B24 units), degrees, degrees, calendar date) 

Bins are enumerated 1-24, corresponding to aerosols of increasing size (see below for details) within the range of 140 - 2500 nm. Approximate equivalent Mean aerosol size (nm) for bins 1- 24 (equally log spaced in dp space):
{149, 168, 189, 213, 240, 271, 306, 345, 389, 438, 494, 557, 638, 708, 799, 901, 1016, 1145, 1291, 1456, 1642, 1852, 2088, 2354}

The corresponding 25 bin edges are as follows:
bins = [140, 157.87, 178.01, 200.73,226.34, 255.22, 287.79, 324.52, 365.93, 412.63, 465.28, 524.66,591.61, 667.10, 752.236, 848.22,956.47, 1078.52, 1216.15, 1371.34,
1546.34, 1743.67, 1966.18, 2217.08, 2500]