I'm going to assume you are speaking about the characteristics of weather.
Here they are:
Humidity
Air Temperature and Pressure
Wind Speed/Direction
Cloud Cover and what kind of clouds.
Also the amount of precipitation as well as what effects the different kind of weather phenomenon to change into e.g. Freezing rain, Hail, Straight Line winds, etc.
(P1)(V1)/(T1)=(P2)(V2)/(T2)
Set up as: (P1)(V1)(T2)/(T1)(P2)=(V2)
P1=207torr
V1=30.0L
T1=-268°C
P2=101.3kPa (Same as 760torr)(use torr to make it easier though)
T2=20.0°C
Make sure all °C is in Kelvin
°C + 273 = Kelvin
Numbers are now:
P1=207torr
V1=30.0L
T1=5K
P2=760torr
T2=293K
Set them up as shown above
Should look like this:
(207torr)(30.0L)(293K)/(5K)(760torr)=V2
As long as you do them in that order you should get: 478.82L
You can also round to get 479L
Either one is correct.
Uranium-238 - 4.46 billion years
Uranium-235 - 704 million years