%matplotlib inline
import pandas as pd

brazil = pd.read_csv('https://quarry.wmflabs.org/run/215651/output/0/csv?download=true',parse_dates=[0],index_col=0)
biology = pd.read_csv('https://quarry.wmflabs.org/run/215652/output/0/csv?download=true',parse_dates=[0],index_col=0)
biology.plot()
<matplotlib.axes._subplots.AxesSubplot at 0x7fd7440c19e8>
brazil.plot()
<matplotlib.axes._subplots.AxesSubplot at 0x7fd743c7c048>
data = brazil.join(biology, lsuffix='_brazil', rsuffix='_biology')
data.plot()
<matplotlib.axes._subplots.AxesSubplot at 0x7fd741b930b8>