The plants need NPK (Nitrogen, phosphorus, Potassium) to be applied externally as the soil generally lacks NPK. The urine has a good NPK which can be directly used in gardens with dilution. This fulfills the nutrients needed for plants.
However, the plant’s requirement of NPK and NPK in urine may not match exactly. So, nutrients need to be added to maximize nutrient utilization from urine. If other nutrients are not fulfilled, the harvest (Yield) will be less. This is because nutrients in urine will remain unused and will remain in the soil.
Using the Excel sheet, you can easily calculate the maximum quantity of harvest that you can expect to get with urine as fertilizer.