171. Weather Iconsa. There are 3 possible weather icons that will be displayed atvarious times in the center of the indoor weather station.i Sunny—indicates that the weather is expected to improve(not that the weather will be sunny).ii Sun with Clouds—indicates that the weather is expected tobe fair (not that the weather will be sunny with clouds).iii Clouds with Rain—indicates that the weather is expectedto get worse (not that the weather will be rainy).b. The weather icons change when the unit detects a change inair pressure.c. The icons change in order, from “sunny” to “sun with clouds”to “clouds with rain” or the reverse.d. It will not change from “sunny” directly to “clouds with rain”,although it is possible for the change to occur quickly.e. If the symbols do not change, the weather has not changed (orthe change has been slow and gradual).f. The sensitivity of the change in foreacst icon is set by the userin section F of the Detailed Set Up Guide.G. Weather Tendency Arrows1. Along with the forecast icon thereis a pressure tendency arrow.2. There is one that points up (on theleft side of the LCD) and one thatpoints down (on the right side ofthe LCD).3. These arrows reflect current changes in the air pressure.4. An arrow pointing up indicates that the air pressure is increasingand the weather is expected to improve or remain good.5. An arrow pointing down indicates that the air pressure isdecreasing and the weather is expected to become worse or remainpoor.6. No arrow means the pressure is stable.7. A storm can be expected if there is a drop of 4 hPa or more in lessthan 6 hours. The clouds with rain icon will be displayed and thetendency arrow that points down will be flashing—indicating thestorm warning feature has been activated. The flashing will stopwhen the air pressure stabilizes or begins to rise.Pressure trendarrow