Any chart should be carefully scrutinised along its sides, at its top heading or legend and at its bottom for scale, measurements and a host of relevant information.
Itshati nganye kufuneka iphicothwe ngomonde kumacala ayo, ngentla kwisihloko sayo okanye ileva nakumzantsti ngesikali, imilinganiselo kuye nomniki wolwazi olululo.