# Aggregation Basics

- [Gauge](/prometheus-up-running/part-iv.-promq/13.introduction-to-promql/aggregation-basics/gauge-1.md)
- [Counter](/prometheus-up-running/part-iv.-promq/13.introduction-to-promql/aggregation-basics/counter.md)
- [Summary](/prometheus-up-running/part-iv.-promq/13.introduction-to-promql/aggregation-basics/summary.md)
- [Histogram](/prometheus-up-running/part-iv.-promq/13.introduction-to-promql/aggregation-basics/histogram.md)