df['Basic Stats'].str[9:13]
0 2010
1 2009
2 2008
3 2007
4 2006
Name: Basic Stats, dtype: object
df["Basic Stats"] = df["Basic Stats"].str.slice(9,13)
Basic Stats Min Max Mean Stdev
0 2010 0.336438 0.743478 0.592622 0.052544
1 2009 0.313259 0.678561 0.525667 0.048047
2 2008 0.374522 0.746828 0.583513 0.055989
3 2007 -0.000000 0.749325 0.330068 0.314351
4 2006 -0.000000 0.819288 0.600136 0.170060