Brief the Temperature load in Staad input

Dear bentley, 

The below values related to temperature load from my project specification, i cant understand this. anyone please explain me about this and what value to be given in staad pro... please help me as soon as possible.

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DESIGN TEMPERATURE VARIATION

The temperature load will be assessed based on the recommendations of BS EN 1991-1-5:2003 Actions on structures – Part 1-5: General actions – Thermal actions. The design temperature range will be defined as the difference between the highest and the lowest one day mean temperature, plus the temperature of the steel due to solar gain. The following parameters have been used:
Tmin = 14°C
Tmax = 41°C
Tsolar = 20°C
Tin = 20°C
Tout = Tmax + Tsolar = 61°C
ΔT = Tout – Tmin = 47°C

The difference between the highest and lowest one day mean temperatures is 27°C.
The temperature range due to solar gain is 20°C.
Therefore, the total temperature range under consideration for structural steelwork = 47°C
Note that the temperature variation is only significant during construction, and temporary stresses may be relieved by sliding joints. Once insulation has been installed, the structural temperature variation will be significantly reduced.

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Thank you in advance....