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.
For example, a plant that is described as hardy to zone 10 means that the plant can withstand a minimum temperature of â1 Â°C (30 Â°F). A more resilient plant that is hardy to zone 9 can tolerate a minimum temperature of â7 Â°C (19 Â°F).