A new variety of chrysanthemum plant named \u2018Grace Time Salmon Improved,\u2019 having a good uniform canopy of salmon quill single flowers with a light green disc. The methods include direct inferences about whether a device is in motion versus static based on a statistical analysis of the variation of radio signal strengths over time. The heating-side door device is configured to open and close a heating air passage through which the cool air flows to be heated by the heater core. FBSC determining section determines a feedback information subcarrier based on the reception quality of subcarriers.