(color online) Streak images for non-compressed electron bunch with (a) and without (b) the streak cavity and maximally compressed electron bunch with single- (c) and multi-pulse (d) measurements, together with the calculated electron pulse profiles for non-compressed electron bunch with (e) and without (blue dotted line) (f) the streak cavity, and the maximally compressed electron bunch with single- (red dash line) and multi-pulse (black solid line) measurements (f).