Species selection should attempt to provide nectar sources in both open and partially shaded conditions throughout the growing season despite yearly variation in environmental conditions.

The erratic yearly variations in Monaco's qualifying regulations saw grid places guaranteed for works teams and past winners in 1961.

Because the measurements have been made over more than two decades, the scientists are confident their findings reflect a long-term trend that cannot be explained away by seasonal or yearly variations.

They say that when using a sample, the yearly variations will not be sufficient to be statistically significant.

Due to its high elevation and low latitude, the climate of the plateau is subject to intense solar radiation and cool temperatures with a large daily fluctuation and little yearly variation.

But in 1760, George III, tired of the yearly variation in the rents, surrendered them to Parliament in return for a regular stipend known as the civil list.

The rainy season runs from June to July, with some yearly variation.

However, their simulations do appear to show that even a slight amount of solar heating can produce both daily and yearly variations, layering the atmosphere in a way not drastically different than our home world.

We know how liable wine production is to yearly variations depending on weather conditions, and crisis prevention measures will only help to mitigate the fluctuations.

A slight yearly variation occurs due to presence of leap years, resetting itself every 4 years.