Added a note about run selection

README.md

@@ -62,6 +62,8 @@ We are in the process of developing comprehensive documentation for our code bas
 The [UK Climate Projections 2018 (UKCP18)](https://www.metoffice.gov.uk/research/approach/collaboration/ukcp) dataset offers insights into the potential climate changes in the UK. UKCP18 is an advancement of the UKCP09 projections and delivers the latest evaluations of the UK's possible climate alterations in land and marine regions throughout the 21st century. This crucial information aids in future Climate Change Risk Assessments and supports the UK’s adaptation to climate change challenges and opportunities as per the National Adaptation Programme.
 We make use of the [Convection Permitting Model (CPM)](https://www.metoffice.gov.uk/pub/data/weather/uk/ukcp18/science-reports/UKCP-Convection-permitting-model-projections-report.pdf). This dataset represents a much finer resolution of climate model (2.2km grid) than typical climate-models, representing a step forward in the ability to simulate small scale behavior (in particular 'atmospheric convection'), and the influence of mountains, coastlines and urban areas. As a result, the CPM provides access to credible climate information important for small-scale weather features and also on local (kilometre) scale; which is particularly important for improving our understanding of climate change in cities. 
 
+The UKCP18-CPM is comprised of 12 ensemble members (or runs). In addition to run 1, we selected the runs which represented the mean, 2nd highest and 2nd lowest daily tasmax values across the whole sequence (runs 5, 6, 7 & 8) to provide users with enough uncertainty in their estimates to appropriately assess bias correction methods. 
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 ## HADS
 [HadUK-Grid](https://www.metoffice.gov.uk/research/climate/maps-and-data/data/haduk-grid/haduk-grid) is a comprehensive collection of climate data for the UK, compiled from various land surface observations across the country. This data is organized into a uniform grid to ensure consistent coverage throughout the UK at up to 1km x 1km resolution. The dataset, spanning from 1836 to the present, includes a variety of climate variables such as air temperature, precipitation, sunshine, and wind speed, available on daily, monthly, seasonal, and annual timescales.