diff --git a/Cargo.lock b/Cargo.lock
index 08277c9..36d11a7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "android-tzdata"
 version = "0.1.1"
@@ -143,6 +152,12 @@ version = "1.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1056f553da426e9c025a662efa48b52e62e0a3a7648aa2d15aeaaf7f0d329357"
 
+[[package]]
+name = "equivalent"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+
 [[package]]
 name = "fnv"
 version = "1.0.7"
@@ -151,9 +166,9 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "futures"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da0290714b38af9b4a7b094b8a37086d1b4e61f2df9122c3cad2577669145335"
+checksum = "65bc07b1a8bc7c85c5f2e110c476c7389b4554ba72af57d8445ea63a576b0876"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -166,9 +181,9 @@ dependencies = [
 
 [[package]]
 name = "futures-channel"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff4dd66668b557604244583e3e1e1eada8c5c2e96a6d0d6653ede395b78bbacb"
+checksum = "2dff15bf788c671c1934e366d07e30c1814a8ef514e1af724a602e8a2fbe1b10"
 dependencies = [
  "futures-core",
  "futures-sink",
@@ -176,15 +191,15 @@ dependencies = [
 
 [[package]]
 name = "futures-core"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb1d22c66e66d9d72e1758f0bd7d4fd0bee04cad842ee34587d68c07e45d088c"
+checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f4fb8693db0cf099eadcca0efe2a5a22e4550f98ed16aba6c48700da29597bc"
+checksum = "1e28d1d997f585e54aebc3f97d39e72338912123a67330d723fdbb564d646c9f"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -193,38 +208,44 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bf34a163b5c4c52d0478a4d757da8fb65cabef42ba90515efee0f6f9fa45aaa"
+checksum = "9e5c1b78ca4aae1ac06c48a526a655760685149f0d465d21f37abfe57ce075c6"
 
 [[package]]
 name = "futures-macro"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53b153fd91e4b0147f4aced87be237c98248656bb01050b96bf3ee89220a8ddb"
+checksum = "162ee34ebcb7c64a8abebc059ce0fee27c2262618d7b60ed8faf72fef13c3650"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.87",
 ]
 
 [[package]]
 name = "futures-sink"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e36d3378ee38c2a36ad710c5d30c2911d752cb941c00c72dbabfb786a7970817"
+checksum = "e575fab7d1e0dcb8d0c7bcf9a63ee213816ab51902e6d244a95819acacf1d4f7"
 
 [[package]]
 name = "futures-task"
-version = "0.3.29"
+version = "0.3.31"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
+
+[[package]]
+name = "futures-timer"
+version = "3.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "efd193069b0ddadc69c46389b740bbccdd97203899b48d09c5f7969591d6bae2"
+checksum = "f288b0a4f20f9a56b5d1da57e2227c661b7b16168e2f72365f57b63326e29b24"
 
 [[package]]
 name = "futures-util"
-version = "0.3.29"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a19526d624e703a3179b3d322efec918b6246ea0fa51d41124525f00f1cc8104"
+checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
 dependencies = [
  "futures-channel",
  "futures-core",
@@ -273,6 +294,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "glob"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2fabcfbdc87f4758337ca535fb41a6d701b65693ce38287d856d1674551ec9b"
+
 [[package]]
 name = "gloo-console"
 version = "0.3.0"
@@ -372,6 +399,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "hashbrown"
+version = "0.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"
+
 [[package]]
 name = "http"
 version = "1.1.0"
@@ -413,7 +446,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
 dependencies = [
  "autocfg",
- "hashbrown",
+ "hashbrown 0.12.3",
+]
+
+[[package]]
+name = "indexmap"
+version = "2.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "707907fe3c25f5424cce2cb7e1cbcafee6bdbe735ca90ef77c29e84591e5b9da"
+dependencies = [
+ "equivalent",
+ "hashbrown 0.15.1",
 ]
 
 [[package]]
@@ -527,6 +570,15 @@ dependencies = [
  "yansi",
 ]
 
+[[package]]
+name = "proc-macro-crate"
+version = "3.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecf48c7ca261d60b74ab1a7b20da18bede46776b2e55535cb958eb595c5fa7b"
+dependencies = [
+ "toml_edit",
+]
+
 [[package]]
 name = "proc-macro-hack"
 version = "0.5.20+deprecated"
@@ -535,9 +587,9 @@ checksum = "dc375e1527247fe1a97d8b7156678dfe7c1af2fc075c9a4db3690ecd2a148068"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.70"
+version = "1.0.89"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39278fbbf5fb4f646ce651690877f89d1c5811a3d4acb27700c1cb3cdb78fd3b"
+checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
 dependencies = [
  "unicode-ident",
 ]
@@ -556,9 +608,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
 dependencies = [
  "proc-macro2",
 ]
@@ -614,13 +666,87 @@ dependencies = [
  "rand_core",
 ]
 
+[[package]]
+name = "regex"
+version = "1.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b544ef1b4eac5dc2db33ea63606ae9ffcfac26c1416a2806ae0bf5f56b201191"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "368758f23274712b504848e9d5a6f010445cc8b87a7cdb4d7cbee666c1288da3"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
+
+[[package]]
+name = "relative-path"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba39f3699c378cd8970968dcbff9c43159ea4cfbd88d43c00b22f2ef10a435d2"
+
+[[package]]
+name = "rstest"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0a2c585be59b6b5dd66a9d2084aa1d8bd52fbdb806eafdeffb52791147862035"
+dependencies = [
+ "futures",
+ "futures-timer",
+ "rstest_macros",
+ "rustc_version 0.4.1",
+]
+
+[[package]]
+name = "rstest_macros"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "825ea780781b15345a146be27eaefb05085e337e869bff01b4306a4fd4a9ad5a"
+dependencies = [
+ "cfg-if",
+ "glob",
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "relative-path",
+ "rustc_version 0.4.1",
+ "syn 2.0.87",
+ "unicode-ident",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 dependencies = [
- "semver",
+ "semver 0.9.0",
+]
+
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver 1.0.23",
 ]
 
 [[package]]
@@ -642,7 +768,7 @@ dependencies = [
  "futures",
  "gloo-file",
  "gloo-timers",
- "indexmap",
+ "indexmap 1.9.3",
  "js-sys",
  "pulldown-cmark",
  "rand",
@@ -664,6 +790,12 @@ dependencies = [
  "semver-parser",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61697e0a1c7e512e84a621326239844a24d8207b4669b41bc18b32ea5cbf988b"
+
 [[package]]
 name = "semver-parser"
 version = "0.7.0"
@@ -687,7 +819,7 @@ checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -747,7 +879,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d022496b16281348b52d0e30ae99e01a73d737b2f45d38fed4edf79f9325a1d5"
 dependencies = [
  "discard",
- "rustc_version",
+ "rustc_version 0.2.3",
  "stdweb-derive",
  "stdweb-internal-macros",
  "stdweb-internal-runtime",
@@ -802,9 +934,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.41"
+version = "2.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "44c8b28c477cc3bf0e7966561e3460130e1255f7a1cf71931075f1c5e7a7e269"
+checksum = "25aa4ce346d03a6dcd68dd8b4010bcb74e54e62c90c573f394c46eae99aba32d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -828,7 +960,7 @@ checksum = "01742297787513b79cf8e29d1056ede1313e2420b7b3b15d0a768b4921f549df"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.41",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -869,6 +1001,23 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "toml_datetime"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0dd7358ecb8fc2f8d014bf86f6f638ce72ba252a2c3a2572f2a795f1d23efb41"
+
+[[package]]
+name = "toml_edit"
+version = "0.22.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4ae48d6208a266e853d946088ed816055e556cc6028c5e8e2b84d9fa5dd7c7f5"
+dependencies = [
+ "indexmap 2.6.0",
+ "toml_datetime",
+ "winnow",
+]
+
 [[package]]
 name = "unicase"
 version = "2.7.0"
@@ -880,9 +1029,9 @@ dependencies = [
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.12"
+version = "1.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
 
 [[package]]
 name = "unicode-width"
@@ -910,6 +1059,7 @@ dependencies = [
  "gloo-storage",
  "plotters",
  "pretty_assertions",
+ "rstest",
  "seed",
  "serde",
  "serde_json",
@@ -1108,6 +1258,15 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
 
+[[package]]
+name = "winnow"
+version = "0.6.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36c1fec1a2bb5866f07c25f68c26e565c4c200aebb96d7e55710c19d3e8ac49b"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "yansi"
 version = "0.5.1"
diff --git a/frontend/Cargo.toml b/frontend/Cargo.toml
index ac7c465..96eace7 100644
--- a/frontend/Cargo.toml
+++ b/frontend/Cargo.toml
@@ -20,3 +20,4 @@ web-sys = { version = "0.3", features = ["AudioContext", "AudioDestinationNode",
 [dev-dependencies]
 assert_approx_eq = "1.1.0"
 pretty_assertions = "1.4.0"
+rstest = "0.23.0"
diff --git a/frontend/src/ui/common.rs b/frontend/src/ui/common.rs
index f00e625..8c8e3ca 100644
--- a/frontend/src/ui/common.rs
+++ b/frontend/src/ui/common.rs
@@ -3,7 +3,7 @@ use std::{
     collections::{BTreeMap, HashMap},
 };
 
-use chrono::{prelude::*, Duration};
+use chrono::{prelude::*, Days, Duration};
 use plotters::prelude::*;
 use seed::{prelude::*, *};
 
@@ -1109,9 +1109,129 @@ pub fn post_message_to_service_worker(message: &ServiceWorkerMessage) -> Result<
     }
 }
 
+/// Group a series of (date, value) pairs.
+///
+/// The `radius` parameter determines the number of days before and after the
+/// center value to include in the calculation.
+///
+/// Only values which have a date within `interval` are used as a center value
+/// for the calculation. Values outside the interval are included in the
+/// calculation if they fall within the radius of a center value.
+///
+/// Two user-provided functions determine how values are combined:
+///
+///  - `group_day` is called to combine values of the *same* day.
+///  - `group_range` is called to combine values of multiple days after all
+///     values for the same day have been combined by `group_day`.
+///
+/// Return `None` in those functions to indicate the absence of a value.
+///
+pub fn centered_moving_grouping(
+    data: &Vec<(NaiveDate, f32)>,
+    interval: &Interval,
+    radius: u64,
+    group_day: impl Fn(Vec<f32>) -> Option<f32>,
+    group_range: impl Fn(Vec<f32>) -> Option<f32>,
+) -> Vec<(NaiveDate, f32)> {
+    let mut date_map: BTreeMap<&NaiveDate, Vec<f32>> = BTreeMap::new();
+
+    for (date, value) in data {
+        date_map.entry(date).or_default().push(*value);
+    }
+
+    let mut grouped: BTreeMap<&NaiveDate, f32> = BTreeMap::new();
+
+    for (date, values) in date_map {
+        if let Some(result) = group_day(values) {
+            grouped.insert(date, result);
+        }
+    }
+
+    interval
+        .first
+        .iter_days()
+        .take_while(|d| *d <= interval.last)
+        .filter_map(|center| {
+            group_range(
+                center
+                    .checked_sub_days(Days::new(radius))
+                    .unwrap_or(center)
+                    .iter_days()
+                    .take_while(|d| {
+                        *d <= interval.last
+                            && *d <= center.checked_add_days(Days::new(radius)).unwrap_or(center)
+                    })
+                    .filter_map(|d| grouped.get(&d))
+                    .copied()
+                    .collect::<Vec<_>>(),
+            ).map(|result| (center, result))
+        })
+        .collect::<Vec<_>>()
+}
+
+/// Calculate a series of moving totals from a given series of (date, value) pairs.
+///
+/// The radius argument determines the number of days to include into the calculated
+/// total before and after each value within the interval.
+///
+/// Multiple values for the same date will be summed up.
+///
+/// An empty result vector may be returned if there is no data within the interval.
+pub fn centered_moving_total(
+    data: &Vec<(NaiveDate, f32)>,
+    interval: &Interval,
+    radius: u64,
+) -> Vec<(NaiveDate, f32)> {
+    centered_moving_grouping(
+        data,
+        interval,
+        radius,
+        |d| Some(d.iter().sum()),
+        |d| Some(d.iter().sum()),
+    )
+}
+
+/// Calculate a series of moving averages from a given series of (date, value) pairs.
+///
+/// The radius argument determines the number of days to include into the calculated
+/// average before and after each value within the interval.
+///
+/// Multiple values for the same date will be averaged.
+///
+/// An empty result vector may be returned if there is no data within the interval.
+/// Multiple result vectors may be returned in cases where there are gaps of more than
+/// 2*radius+1 days in the input data within the interval.
+pub fn centered_moving_average(
+    data: &Vec<(NaiveDate, f32)>,
+    interval: &Interval,
+    radius: u64,
+) -> Vec<(NaiveDate, f32)> {
+    #[allow(clippy::cast_precision_loss)]
+    centered_moving_grouping(
+        data,
+        interval,
+        radius,
+        |d| {
+            if d.is_empty() {
+                None
+            } else {
+                Some(d.iter().sum::<f32>() / d.len() as f32)
+            }
+        },
+        |d| {
+            if d.is_empty() {
+                None
+            } else {
+                Some(d.iter().sum::<f32>() / d.len() as f32)
+            }
+        },
+    )
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;
+    use rstest::rstest;
 
     #[test]
     fn quartile_one() {
@@ -1246,4 +1366,76 @@ mod tests {
             Duration::days(6)
         );
     }
+
+    #[rstest]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[], &[])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0)], &[(2020, 2, 3, 1.0)])]
+    #[case((2020, 3, 3), (2020, 3, 5), 0, &[(2020, 2, 3, 1.0)], &[])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 5, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 5, 1.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 5, 1.0), (2020, 2, 3, 3.0)], &[(2020, 2, 3, 2.0), (2020, 2, 4, 1.0), (2020, 2, 5, 1.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 1, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)], &[(2020, 2, 3, 1.5), (2020, 2, 4, 2.0), (2020, 2, 5, 2.5)])]
+    #[case((2020, 2, 2), (2020, 2, 6), 1, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)], &[(2020, 2, 2, 1.0), (2020, 2, 3, 1.5), (2020, 2, 4, 2.0), (2020, 2, 5, 2.5), (2020, 2, 6, 3.0)])]
+    #[case((2020, 2, 3), (2020, 2, 7), 1, &[(2020, 2, 3, 1.0), (2020, 2, 7, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 6, 1.0), (2020, 2, 7, 1.0)])]
+    #[case((2020, 2, 3), (2020, 2, 9), 1, &[(2020, 2, 3, 1.0), (2020, 2, 9, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 8, 1.0), (2020, 2, 9, 1.0)])]
+    fn centered_moving_average(
+        #[case] start: (i32, u32, u32),
+        #[case] end: (i32, u32, u32),
+        #[case] radius: u64,
+        #[case] input: &[(i32, u32, u32, f32)],
+        #[case] expected: &[(i32, u32, u32, f32)],
+    ) {
+        assert_eq!(
+            super::centered_moving_average(
+                &input
+                    .iter()
+                    .map(|(y, m, d, v)| (NaiveDate::from_ymd_opt(*y, *m, *d).unwrap(), *v))
+                    .collect::<Vec<_>>(),
+                &Interval {
+                    first: NaiveDate::from_ymd_opt(start.0, start.1, start.2).unwrap(),
+                    last: NaiveDate::from_ymd_opt(end.0, end.1, end.2).unwrap(),
+                },
+                radius,
+            ),
+            expected
+                .iter()
+                .map(|(y, m, d, v)| (NaiveDate::from_ymd_opt(*y, *m, *d).unwrap(), *v))
+                .collect::<Vec<_>>(),
+        );
+    }
+
+    #[rstest]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[], &[(2020, 2, 3, 0.0), (2020, 2, 4, 0.0), (2020, 2, 5, 0.0)])]
+    #[case((2020, 3, 3), (2020, 3, 5), 0, &[(2020, 2, 3, 1.0)], &[(2020, 3, 3, 0.0), (2020, 3, 4, 0.0), (2020, 3, 5, 0.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 0.0), (2020, 2, 5, 0.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 0, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0), (2020, 2, 3, 1.0)], &[(2020, 2, 3, 2.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)])]
+    #[case((2020, 2, 3), (2020, 2, 5), 1, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)], &[(2020, 2, 3, 3.0), (2020, 2, 4, 6.0), (2020, 2, 5, 5.0)])]
+    #[case((2020, 2, 2), (2020, 2, 6), 1, &[(2020, 2, 3, 1.0), (2020, 2, 4, 2.0), (2020, 2, 5, 3.0)], &[(2020, 2, 2, 1.0), (2020, 2, 3, 3.0), (2020, 2, 4, 6.0), (2020, 2, 5, 5.0), (2020, 2, 6, 3.0)])]
+    #[case((2020, 2, 3), (2020, 2, 7), 1, &[(2020, 2, 3, 1.0), (2020, 2, 7, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 5, 0.0), (2020, 2, 6, 1.0), (2020, 2, 7, 1.0)])]
+    #[case((2020, 2, 3), (2020, 2, 9), 1, &[(2020, 2, 3, 1.0), (2020, 2, 9, 1.0)], &[(2020, 2, 3, 1.0), (2020, 2, 4, 1.0), (2020, 2, 5, 0.0), (2020, 2, 6, 0.0), (2020, 2, 7, 0.0), (2020, 2, 8, 1.0), (2020, 2, 9, 1.0)])]
+    fn centered_moving_total(
+        #[case] start: (i32, u32, u32),
+        #[case] end: (i32, u32, u32),
+        #[case] radius: u64,
+        #[case] input: &[(i32, u32, u32, f32)],
+        #[case] expected: &[(i32, u32, u32, f32)],
+    ) {
+        assert_eq!(
+            super::centered_moving_total(
+                &input
+                    .iter()
+                    .map(|(y, m, d, v)| (NaiveDate::from_ymd_opt(*y, *m, *d).unwrap(), *v))
+                    .collect::<Vec<_>>(),
+                &Interval {
+                    first: NaiveDate::from_ymd_opt(start.0, start.1, start.2).unwrap(),
+                    last: NaiveDate::from_ymd_opt(end.0, end.1, end.2).unwrap(),
+                },
+                radius,
+            ),
+            expected
+                .iter()
+                .map(|(y, m, d, v)| (NaiveDate::from_ymd_opt(*y, *m, *d).unwrap(), *v))
+                .collect::<Vec<_>>(),
+        );
+    }
 }