Star formation history (left) and fraction of the stellar mass fraction formed per bin of time as a function of the look-back time (right) in CR7. The properties of the total spectrum of CR7, and for CR7-A, CR7-B, and CR7-C are shown in black, orange, red, and blue, respectively. Error bars represent the 84^th and 16^th percentiles. Horizontal black dashed lines in the right panel mark the level when 50 % and 25 % of the stellar mass was formed in CR7.