;"Wednesday, 14 of May";"Tuesday, 13 of May";"average on Wednesday";"average for 7 days"
"Visitors during 31 days";10;?;15;10
"Visitors during 7 days";10;?;9.8;10
"Visitors during a day";3;?;4.2;3
"Continual (present every day during a week)";1;?;0.5;1
"Main body (present every week during a month)";0;?;0.25;0