I am just in the progress of setting my thesis. I usually use oldtyle figures within running text. However, I sometimes have to report statistical values. I am now unsure what is best practice here. Should I set all statistical values in lining figures (this improves readability – especially in the case where you want to use zeros; see example below) or should I stick with oldstyle numbers? Are there any kinds of rules concerning what figures should be set oldstyle and what figures as lining figures (e.g., non-statistical values should be set as oldstyle figures and all statistical values as lining figures)?