diff --git a/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/fetcher.test.ts.snap b/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/fetcher.test.ts.snap
index 580cafff95e0c..64f06ad0a81cd 100644
--- a/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/fetcher.test.ts.snap
+++ b/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/fetcher.test.ts.snap
@@ -16,6 +16,9 @@ Array [
               "p95": Object {
                 "percentiles": Object {
                   "field": "transaction.duration.us",
+                  "hdr": Object {
+                    "number_of_significant_value_digits": 2,
+                  },
                   "percents": Array [
                     95,
                   ],
@@ -126,6 +129,9 @@ Array [
               "p95": Object {
                 "percentiles": Object {
                   "field": "transaction.duration.us",
+                  "hdr": Object {
+                    "number_of_significant_value_digits": 2,
+                  },
                   "percents": Array [
                     95,
                   ],
diff --git a/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/queries.test.ts.snap b/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/queries.test.ts.snap
index 1096c1638f3f2..b93f842b878cb 100644
--- a/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/queries.test.ts.snap
+++ b/x-pack/plugins/apm/server/lib/transaction_groups/__snapshots__/queries.test.ts.snap
@@ -14,6 +14,9 @@ Object {
           "p95": Object {
             "percentiles": Object {
               "field": "transaction.duration.us",
+              "hdr": Object {
+                "number_of_significant_value_digits": 2,
+              },
               "percents": Array [
                 95,
               ],
@@ -120,6 +123,9 @@ Object {
           "p95": Object {
             "percentiles": Object {
               "field": "transaction.duration.us",
+              "hdr": Object {
+                "number_of_significant_value_digits": 2,
+              },
               "percents": Array [
                 95,
               ],
diff --git a/x-pack/plugins/apm/server/lib/transactions/__snapshots__/queries.test.ts.snap b/x-pack/plugins/apm/server/lib/transactions/__snapshots__/queries.test.ts.snap
index 49e0e0669c241..cc5900919f829 100644
--- a/x-pack/plugins/apm/server/lib/transactions/__snapshots__/queries.test.ts.snap
+++ b/x-pack/plugins/apm/server/lib/transactions/__snapshots__/queries.test.ts.snap
@@ -333,6 +333,9 @@ Object {
           "pct": Object {
             "percentiles": Object {
               "field": "transaction.duration.us",
+              "hdr": Object {
+                "number_of_significant_value_digits": 2,
+              },
               "percents": Array [
                 95,
                 99,
@@ -425,6 +428,9 @@ Object {
           "pct": Object {
             "percentiles": Object {
               "field": "transaction.duration.us",
+              "hdr": Object {
+                "number_of_significant_value_digits": 2,
+              },
               "percents": Array [
                 95,
                 99,
@@ -522,6 +528,9 @@ Object {
           "pct": Object {
             "percentiles": Object {
               "field": "transaction.duration.us",
+              "hdr": Object {
+                "number_of_significant_value_digits": 2,
+              },
               "percents": Array [
                 95,
                 99,
diff --git a/x-pack/plugins/apm/server/lib/transactions/charts/get_timeseries_data/__snapshots__/fetcher.test.ts.snap b/x-pack/plugins/apm/server/lib/transactions/charts/get_timeseries_data/__snapshots__/fetcher.test.ts.snap
index 6c8430a3e71cf..25ebb15fd73e8 100644
--- a/x-pack/plugins/apm/server/lib/transactions/charts/get_timeseries_data/__snapshots__/fetcher.test.ts.snap
+++ b/x-pack/plugins/apm/server/lib/transactions/charts/get_timeseries_data/__snapshots__/fetcher.test.ts.snap
@@ -21,6 +21,9 @@ Array [
               "pct": Object {
                 "percentiles": Object {
                   "field": "transaction.duration.us",
+                  "hdr": Object {
+                    "number_of_significant_value_digits": 2,
+                  },
                   "percents": Array [
                     95,
                     99,