sicily 1817

#include "iostream"
#include <stdio.h>
using namespace std;

const int Max = 100;

int main()
{
	int TestCase;
	//cin >> TestCase;
	scanf("%d", &TestCase);
	while (TestCase--)
	{

		int score[Max][Max];
		int minScore[Max];
		int maxScore[Max];
		int judge, player, i, j;
		double average;

		//cin >> judge >> player;
		scanf("%d%d", &judge, &player);
		for (int i = 0; i < player; i++)
		{
			minScore[i] = 100;
			maxScore[i] = 0;
		}

		for (i = 0; i < judge; i++)
		{
			for ( j = 0; j < player; j++)
			{
				cin >> score[i][j];
				if (score[i][j] > maxScore[j])
					maxScore[j] = score[i][j];
				if (score[i][j] < minScore[j])
					minScore[j] = score[i][j];
			}
		}

		for ( i = 0; i < player; i++)
		{
			average = 0;
			for (j = 0; j < judge; j++)
			{
				average += score[j][i];
			}
			average = (average - maxScore[i] - minScore[i]) / (judge - 2);
			/*cout.setf(ios_base::showpoint);
			cout.precision(3);
			cout << average << endl;*/
			printf("%.2f\n", average);
		}
	}
}