Treatment  Observation
    1          6.08
    1         22.29
    1          7.51
    1         34.36
    1         23.68
    2         30.45
    2         22.71
    2         44.52
    2         31.47
    2         36.81
    3         32.04
    3         28.03
    3         32.74
    3         23.84
    3         29.64