results.txt

              release     beta    aurora    nightly
----------  ---------  -------  --------  ---------
2014-12-25   69952943  1738103     66862      45328
2014-12-26   79407038  2012413     75219      48960
2014-12-27   74701774  1957618     68368      47283
2014-12-28   73474760  1755038     67833      47795
2014-12-29   94104371  2334070     88696      54151
2014-12-30   90880260  2315405     87093      54051
2014-12-31   76797584  2135065     75351      48533
2015-01-01   69296349  1822021     65846      46986
2015-01-02   83625497  2129676     79653      52032
2015-01-03   76463162  2007495     71203      49951

2015-12-25   62292164  1373476     75739      33169
2015-12-26   64963136  1616455     75552      34076
2015-12-27   66165040  1424934     76893      34635
2015-12-28   88627883  2115395    101041      41165
2015-12-29   87420090  2054037    100641      41229
2015-12-30   85357262  2055078     98375      40489
2015-12-31   70783101  1811839     73618      30956
2016-01-01   62151734  1419538     64736      29123
2016-01-02   69168360  1676594     70339      31057
2016-01-03   70869246  1466451     71906      32073

script.py

import requests
import datetime
from tabulate import tabulate


base_url = 'https://crash-analysis.mozilla.com/rkaiser/%(day)s/ff-%(channel)s-adu.csv'
channels = ('release', 'beta', 'aurora', 'nightly')


def fetch_adus(start, end):
    adus = []

    while start <= end:
        day = start.isoformat()
        adu = [day]

        for channel in channels:
            url = base_url % ({'day': day, 'channel': channel})

            r = requests.get(url)
            adu.append(r.text)

        adus.append(adu)

        start += datetime.timedelta(days=1)

    return adus


if __name__ == '__main__':
    start = datetime.date(2014, 12, 25)
    end = datetime.date(2015, 1, 3)
    adu_2014 = fetch_adus(start, end)

    start = datetime.date(2015, 12, 25)
    end = datetime.date(2016, 1, 3)
    adu_2015 = fetch_adus(start, end)

    output = []
    output.extend(adu_2014)
    output.extend(adu_2015)

    headers = ['']
    headers.extend(channels)
    print(tabulate(output, headers=headers))