Can you please tell me the mean vitamin d level?

Howmuch D: <12ng/ml associated with vitamin d deficiency, leading to rickets in infants and children and osteomalacia in adults 12–20 ng/ml generally considered inadequate for bone and overall health in healthy individuals ?20 ng/ml generally considered adequate for bone and overall health in healthy individuals >50 ng/ml emerging evidence links potential adverse effects to such high levels, particularly >15.