instruction: what is the monthly average value of patient 006-195316's weight since 2105?
response: SELECT AVG(patient.admissionweight) FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '006-195316') AND NOT patient.admissionweight IS NULL AND STRFTIME('%y', patient.unitadmittime) >= '2105' GROUP BY STRFTIME('%y-%m', patient.unitadmittime)