{"C1":"C1","C2":"C2","C3":"C3","C4":"C4"}
{"C1":"","C2":"Sample","C3":"Sample","C4":"Standard"}
{"C1":"Group","C2":"size","C3":"mean","C4":"error"}
{"C1":"Young","C2":"13","C3":"7.47","C4":"0.22"}
{"C1":"Elderly men","C2":"12","C3":"6.71","C4":"0.28"}