C# Online Compiler | .NET Fiddle

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
    public static void Main()
    {
        List<SolarProduction> solarProductions = new List<SolarProduction>
        {
            new SolarProduction { DataID = 1, LocationID = 101, Timestamp = new DateTime(2023, 3, 10), Production = 500.5, SunlightDuration = 5.5 },
            new SolarProduction { DataID = 2, LocationID = 102, Timestamp = new DateTime(2023, 3, 11), Production = 600.0, SunlightDuration = 6.0 },
            new SolarProduction { DataID = 3, LocationID = 101, Timestamp = new DateTime(2023, 3, 12), Production = 550.0, SunlightDuration = 6.5 },
            new SolarProduction { DataID = 4, LocationID = 103, Timestamp = new DateTime(2023, 3, 13), Production = 620.0, SunlightDuration = 7.0 },
            new SolarProduction { DataID = 5, LocationID = 101, Timestamp = new DateTime(2023, 3, 14), Production = 560.0, SunlightDuration = 5.8 },
            // Add more solar production entries as needed
        };

        // Step 1: Calculate the total energy production and average sunlight duration for each location
        var productionByLocation = solarProductions
            .GroupBy(sp => sp.LocationID)
            .Select(g => new
            {
                LocationID = g.Key,
                TotalProduction = g.Sum(sp => sp.Production),
                AverageSunlightDuration = g.Average(sp => sp.SunlightDuration)
            })
            .ToList();

        // Step 2: Identify the location with the highest total energy production
        var topProductionLocation = productionByLocation
            .OrderByDescending(l => l.TotalProduction)
            .First();

        Console.WriteLine($"Location with Highest Total Energy Production: {topProductionLocation.LocationID}, Total Production: {topProductionLocation.TotalProduction} kWh");

        // Step 3: Determine the correlation between sunlight duration and energy production for the top location
        var dataForTopLocation = solarProductions
            .Where(sp => sp.LocationID == topProductionLocation.LocationID)
            .ToList();

        var correlationAnalysis = dataForTopLocation
            .Select(sp => new { sp.SunlightDuration, sp.Production })
            .OrderBy(sp => sp.SunlightDuration)
            .ToList();

        var increaseInSunlight = correlationAnalysis.Last().SunlightDuration - correlationAnalysis.First().SunlightDuration;
        var increaseInProduction = correlationAnalysis.Last().Production - correlationAnalysis.First().Production;
        var correlation = increaseInSunlight > 0 && increaseInProduction > 0 ? "Positive" : increaseInSunlight < 0 && increaseInProduction < 0 ? "Negative" : "No clear";

        Console.WriteLine($"Correlation Between Sunlight Duration and Energy Production: {correlation}");
    }
}

public class SolarProduction
{
    public int DataID { get; set; }
    public int LocationID { get; set; }
    public DateTime Timestamp { get; set; }
    public double Production { get; set; }
    public double SunlightDuration { get; set; }
}

 
using System;
using System.Collections.Generic;
using System.Linq;
​
public class Program
{
    public static void Main()
    {
        List<SolarProduction> solarProductions = new List<SolarProduction>
        {
            new SolarProduction { DataID = 1, LocationID = 101, Timestamp = new DateTime(2023, 3, 10), Production = 500.5, SunlightDuration = 5.5 },
            new SolarProduction { DataID = 2, LocationID = 102, Timestamp = new DateTime(2023, 3, 11), Production = 600.0, SunlightDuration = 6.0 },
            new SolarProduction { DataID = 3, LocationID = 101, Timestamp = new DateTime(2023, 3, 12), Production = 550.0, SunlightDuration = 6.5 },
            new SolarProduction { DataID = 4, LocationID = 103, Timestamp = new DateTime(2023, 3, 13), Production = 620.0, SunlightDuration = 7.0 },
            new SolarProduction { DataID = 5, LocationID = 101, Timestamp = new DateTime(2023, 3, 14), Production = 560.0, SunlightDuration = 5.8 },
            // Add more solar production entries as needed
        };
​
        // Step 1: Calculate the total energy production and average sunlight duration for each location
        var productionByLocation = solarProductions
            .GroupBy(sp => sp.LocationID)
            .Select(g => new
            {
                LocationID = g.Key,