instruction: what would be patient 015-8398's monthly maximum weight since 112 months ago?
response: SELECT MAX(patient.admissionweight) FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '015-8398') AND NOT patient.admissionweight IS NULL AND DATETIME(patient.unitadmittime) >= DATETIME(CURRENT_TIME(), '-112 month') GROUP BY STRFTIME('%y-%m', patient.unitadmittime)