text: ...                2                    6.5         8.28       10  ...                0                    5.5         5.20       11  ...                2                    6.5         8.28                   text_standard  fernandez_huerta  szigriszt_pazos  gutierrez_polini  \    0   5th and 6th grade            133.58           131.54             62.30       1   6th and 7th grade            115.58           112.37             54.83       2   5th and 6th grade            133.58           131.54