I can see "Is Clamped" metric value as "0" for this agent. Also I can see the below Enterprise Manger Metric Clamping Limit in "IntroscopeEnterpriseManager.properties"
# Per Agent limit. Takes into account live and historical metrics
introscope.enterprisemanager.agent.metrics.limit=50000
# Per EM limit. Takes into account only live metrics (i.e. currently reporting from Agents)
introscope.enterprisemanager.metrics.live.limit=500000
# Per EM limit. Takes into account metrics with Smartstor data (i.e. live and historical metrics)
introscope.enterprisemanager.metrics.historical.limit=1200000