bpis to period as well

cmd/cli/main.go

@@ -6,6 +6,7 @@ import (
 	"flag"
 	"fmt"
 	"io"
+	"maps"
 	"math"
 	"os"
 	"os/signal"
@@ -100,6 +101,14 @@ func Main() {
 			panic(err)
 		}
 		bpis = b
+		if period := config.Query.Period; !period.Empty() {
+			before := period.Stop.Format("2006-01-02")
+			for _, timeToValue := range bpis {
+				maps.DeleteFunc(timeToValue, func(k string, _ float64) bool {
+					return k > before
+				})
+			}
+		}
 	}
 
 	cpiNormalizer := ana.NewNormalizer()