A clear difference in HFCWO devices. Since therapies can be effective only when patients comply with them, the SmartVestÂ® Airway Clearance System from Electromed stands apart among high frequency chest wall oscillation (HFCWO) devices.
The 2012 USDA Plant Hardiness Zone Map is the standard by which gardeners and growers can determine which plants are most likely to thrive at a location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones.
There are 11 planting zones on the USDA Plant Hardiness Map in the contiguous United States and southern Canada. The regions are defined by a 10-degree Fahrenheit difference in the average annual minimum temperature. To put the definition in layman's terms, the higher the numbers, the warmer the temperatures for gardening in those areas.