teeth: 298
average: 0.181
average (nonzeros): 1.06
{'Fr': 48, 'Mo': 40, 'Sa': 53, 'Su': 35, 'Th': 42, 'Tu': 45, 'We': 41}
{2018: 3, 2019: 24, 2020: 73, 2021: 135, 2022: 63}
[('0/day', 1362), ('1/day', 264), ('2/day', 17)]
[('12am', 0, 29),
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 ('06pm', 18, 8),
 ('07pm', 19, 16),
 ('08pm', 20, 14),
 ('09pm', 21, 15),
 ('10pm', 22, 15),
 ('11pm', 23, 17)]
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