Brand Temp M.user   Soft Fr
    X  Low      N   Hard 68
    M  Low      N   Hard 42
    X High      N   Hard 42
    M High      N   Hard 30
    X  Low      Y   Hard 37
    M  Low      Y   Hard 52
    X High      Y   Hard 24
    M High      Y   Hard 43
    X  Low      N Medium 66
    M  Low      N Medium 50
    X High      N Medium 33
    M High      N Medium 23
    X  Low      Y Medium 47
    M  Low      Y Medium 55
    X High      Y Medium 23
    M High      Y Medium 47
    X  Low      N   Soft 63
    M  Low      N   Soft 53
    X High      N   Soft 29
    M High      N   Soft 27
    X  Low      Y   Soft 57
    M  Low      Y   Soft 49
    X High      Y   Soft 19
    M High      Y   Soft 29