tail -500 BMP390_P1_P2.csv |awk -F',' '{

    x[NR] = $2;
    sum += $2;
}
END {
    avg = sum / NR;
    for (i = 1; i <= NR; i++) {
        sq_diff += (x[i] - avg)^2;
    }
    stddev = sqrt(sq_diff / NR);
    printf("Average: %.4f\nStandard Deviation: %.4f\n", avg, stddev);
}' 

