vnstat -d

 eth0  /  daily

         day         rx      |     tx      |    total    |   avg. rate
     ------------------------+-------------+-------------+---------------
      10/19/19      3.30 MiB |     977 KiB |    4.26 MiB |    0.40 kbit/s
      10/20/19      4.89 MiB |     825 KiB |    5.69 MiB |    0.54 kbit/s
      10/21/19      2.29 MiB |    2.73 MiB |    5.02 MiB |    0.48 kbit/s
      10/22/19      3.53 MiB |   15.27 MiB |   18.80 MiB |    1.78 kbit/s
      10/23/19      5.52 MiB |   26.48 MiB |   32.00 MiB |    3.03 kbit/s
      10/24/19      5.79 MiB |   28.74 MiB |   34.54 MiB |    3.27 kbit/s
      10/25/19      8.49 MiB |   45.49 MiB |   53.98 MiB |    5.12 kbit/s
      10/26/19     21.66 MiB |   58.37 MiB |   80.03 MiB |    7.59 kbit/s
      10/27/19     11.90 MiB |   41.29 MiB |   53.20 MiB |    5.04 kbit/s
      10/28/19     11.18 MiB |   33.73 MiB |   44.91 MiB |    4.26 kbit/s
      10/29/19      7.70 MiB |   37.52 MiB |   45.23 MiB |    4.29 kbit/s
      10/30/19      7.39 MiB |   35.84 MiB |   43.23 MiB |    4.10 kbit/s
      10/31/19      6.88 MiB |   32.94 MiB |   39.83 MiB |    3.78 kbit/s
      11/01/19      6.08 MiB |   33.29 MiB |   39.37 MiB |    3.73 kbit/s
      11/02/19      3.73 MiB |   18.40 MiB |   22.13 MiB |    2.10 kbit/s
      11/03/19      7.27 MiB |   36.51 MiB |   43.78 MiB |    4.15 kbit/s
      11/04/19     11.33 MiB |   58.75 MiB |   70.08 MiB |    6.64 kbit/s
      11/05/19      1.16 MiB |    2.03 MiB |    3.19 MiB |    0.30 kbit/s
      11/06/19      1.57 MiB |    2.92 MiB |    4.49 MiB |    0.43 kbit/s
      11/07/19      2.45 MiB |    3.41 MiB |    5.85 MiB |    0.56 kbit/s
      11/08/19      1.72 MiB |    3.20 MiB |    4.92 MiB |    0.47 kbit/s
      11/09/19       957 KiB |    1.86 MiB |    2.79 MiB |    0.26 kbit/s
      11/10/19      1.50 MiB |    5.22 MiB |    6.72 MiB |    0.64 kbit/s
      11/11/19      4.80 MiB |    6.26 MiB |   11.06 MiB |    1.05 kbit/s
      11/12/19      1.17 MiB |    2.58 MiB |    3.75 MiB |    0.36 kbit/s
      11/13/19      1.17 MiB |    2.85 MiB |    4.01 MiB |    0.38 kbit/s
      11/14/19      1.15 MiB |    3.22 MiB |    4.38 MiB |    0.41 kbit/s
      11/15/19      3.13 MiB |    4.80 MiB |    7.93 MiB |    0.75 kbit/s
      11/16/19      1.32 MiB |    3.21 MiB |    4.53 MiB |    0.43 kbit/s
      11/17/19       696 KiB |    1.19 MiB |    1.87 MiB |    0.58 kbit/s
     ------------------------+-------------+-------------+---------------

 vnstat -m

 eth0  /  monthly

       month        rx      |     tx      |    total    |   avg. rate
    ------------------------+-------------+-------------+---------------
      Dec '18     31.74 GiB |  328.38 GiB |  360.12 GiB |    1.13 Mbit/s
      Jan '19      3.03 GiB |    5.65 GiB |    8.68 GiB |   27.18 kbit/s
      Feb '19      7.18 GiB |    7.70 GiB |   14.89 GiB |   51.62 kbit/s
      Mar '19      4.36 GiB |    5.23 GiB |    9.59 GiB |   30.02 kbit/s
      Apr '19     22.45 GiB |   24.91 GiB |   47.36 GiB |  153.27 kbit/s
      May '19      1.98 GiB |    1.73 GiB |    3.71 GiB |   11.62 kbit/s
      Jun '19      1.45 GiB |    1.54 GiB |    2.99 GiB |    9.68 kbit/s
      Jul '19    948.39 MiB |    1.33 GiB |    2.25 GiB |    7.05 kbit/s
      Aug '19    220.99 MiB |  342.39 MiB |  563.37 MiB |    1.72 kbit/s
      Sep '19     35.86 MiB |   79.30 MiB |  115.16 MiB |    0.36 kbit/s
      Oct '19    158.16 MiB |  393.43 MiB |  551.59 MiB |    1.69 kbit/s
      Nov '19     51.15 MiB |  189.69 MiB |  240.83 MiB |    1.40 kbit/s
    ------------------------+-------------+-------------+---------------