Significant Figures

Hi, while running a KOKA model I came across an observation and would greatly appreciate it if someone helps me understand it. When using a SIG=3, the model converges, and provides lower and upper CI bounds. All the CI bounds are positive except Q and the CV% of all parameters are within 20 % (except Q). This suggests (correct me if I am wrong) that the data might not be rich enough for the model to calculate a precise value for Q -- Indranil Bhattacharya