covid19jp               covid19jp: Japanese Covid-19 Datasets
jp_daily                Japanese daily data of covid-19 situation. More
                        details are available here.
pref                    Master data for Japanese prefectures. More
                        details are available here.
pref_daily              Japanese prefecture-level daily data of
                        covid-19 situation. More details are available
                        here.
pref_weekly             Japanese prefecture-level weekly data of
                        covid-19 situation. More details are available
                        here.
update_data             Update the covid19jp datasets
