The LM234 is specified to operate for currents between 1 uA and 10 mA. The "Ratio of I_set to I_bias" plot is critical to selecting the correct resistance for R_set, which is used to set the reference current.
However, that plot does not cover the full specified range of this component. It only goes down to 10 uA. The range of 1 uA - 10 uA is missing from that plot. Customer needs the full plot in order to be able to design with this component.
Thanks for you help in advance.