I need to format the for loop data in below format: the first column value is same so I need to segregate them and so on top

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C#

.NET

MVC

I have the data in my code like below which I need to format differently(C# code).

3.99E+03    5.3082E+03  4.719E+03   8.001E-01   7.3568E+02  5.759E+02   1.9892E+03  
3.99E+03    6.0085E+03  4.5499E+03  8.321E-01   7.3305E+02  5.749E+02   2.0866E+03  
3.99E+03    6.7089E+03  4.3104E+03  8.53E-01    7.2935E+02  5.738E+02   2.1531E+03  
3.99E+03    7.4092E+03  4.0095E+03  8.625E-01   7.2471E+02  5.727E+02   2.1877E+03  
3.99E+03    8.1096E+03  3.6563E+03  8.602E-01   7.1929E+02  5.716E+02   2.1892E+03  
3.99E+03    8.8099E+03  3.2602E+03  8.461E-01   7.1325E+02  5.704E+02   2.156E+03   
3.99E+03    9.5103E+03  2.8306E+03  8.212E-01   7.0675E+02  5.692E+02   2.082E+03   
3.99E+03    1.0211E+04  2.3637E+03  7.848E-01   6.9973E+02  5.68E+02    1.9544E+03

Formatted data should look like below:

3.99E+03 

5.3082E+03  4.719E+03   8.001E-01   7.3568E+02  5.759E+02   1.9892E+03  
6.0085E+03  4.5499E+03  8.321E-01   7.3305E+02  5.749E+02   2.0866E+03  
6.7089E+03  4.3104E+03  8.53E-01    7.2935E+02  5.738E+02   2.1531E+03  
7.4092E+03  4.0095E+03  8.625E-01   7.2471E+02  5.727E+02   2.1877E+03  
8.1096E+03  3.6563E+03  8.602E-01   7.1929E+02  5.716E+02   2.1892E+03  
8.8099E+03  3.2602E+03  8.461E-01   7.1325E+02  5.704E+02   2.156E+03   
9.5103E+03  2.8306E+03  8.212E-01   7.0675E+02  5.692E+02   2.082E+03   
1.0211E+04  2.3637E+03  7.848E-01   6.9973E+02  5.68E+02    1.9544E+03

What I have tried:

Here is the piece of code I am trying.

var sb = new StringBuilder();
var csvSb = new StringBuilder();
string result = string.Empty;

var rpmvalue = dto.FirstOrDefault()?.data.FirstOrDefault();


for (int i = 0; i < dto[0].data.Count; i++)
{
for (int j = 1; j < dto.Count; j++)
{
result = dto[j].data.Count > 0 && dto[j].data[i] != 0 ? Convert.ToString(dto[j].data[i]) : string.Empty;
double dresult = 0.00;
if (Double.TryParse(result, out double number))
{
dresult = number;
}
result = string.Format("{0:0.#####E+00}", dresult);
AppendPadded(sb, csvSb, result, OperatingParamsValueWidth);
}
sb.AppendLine();
csvSb.AppendLine();
}


public void AppendPadded(StringBuilder sb, StringBuilder csvSb, string s, int count)
{
if (null == s)
s = string.Empty;
int maxLength = 10;
sb.Append(s);
//if (count - s.Length > 0)
sb.Append(' ', maxLength - s.Length + 2);
csvSb.Append(s);
csvSb.Append(',');
}