diff --git a/src/lib/services/calculator/main.ts b/src/lib/services/calculator/main.ts
index 3b2f359..e516109 100644
--- a/src/lib/services/calculator/main.ts
+++ b/src/lib/services/calculator/main.ts
@@ -183,7 +183,10 @@ export class LevelCalculator {
 }
 
 export type StandardsConfig = {
-    maxLevel: number
+    maxLevel: number,
+    weightModifier: number,
+    weightSkew: number,
+    ageModifier: number,
 }
 
 export class Standards {
@@ -192,7 +195,10 @@ export class Standards {
 
     constructor(activityStandards: ActivityStandards, cfg?: Partial<StandardsConfig>) {
         this.cfg = {
-            maxLevel: cfg?.maxLevel ?? 100
+            maxLevel: cfg?.maxLevel ?? 100,
+            weightModifier: cfg?.weightModifier ?? .1,
+            weightSkew: cfg?.weightSkew ?? .1,
+            ageModifier: cfg?.ageModifier ?? .1,
         };
 
         // prepare data
@@ -213,9 +219,8 @@ export class Standards {
                 for (const gender of Object.values(Gender)) {
                     const referenceAge = 50;
 
-                    const skewRatio = 0; // 0 = normal, 1 = max skew
-                    const minAge = referenceAge - (ageGenerator.step * ageGenerator.spread * (1 - skewRatio));
-                    const maxAge = referenceAge + (ageGenerator.step * ageGenerator.spread * (1 + skewRatio));
+                    const minAge = referenceAge - (ageGenerator.step * ageGenerator.spread);
+                    const maxAge = referenceAge + (ageGenerator.step * ageGenerator.spread);
 
                     const referenceStandard = this
                         .byActivity(activity)
@@ -237,7 +242,7 @@ export class Standards {
                         for (const lvl in referenceStandard.levels) {
                             if (!referenceStandard.levels[lvl]) continue;
 
-                            const scalingExponent = .1;
+                            const scalingExponent = this.cfg.ageModifier;
                             const coefficient = ageGenerator.ratio === "inverse" ?
                                 referenceAge / currAge :
                                 currAge / referenceAge;
@@ -267,7 +272,7 @@ export class Standards {
                     for (const age of this.agesFor(activity, gender)) {
                         const referenceWeight = getAvgWeight(gender, age);
 
-                        const skewRatio = 0.4; // 0 = normal, 1 = max skew
+                        const skewRatio = this.cfg.weightSkew; // 0 = normal, 1 = max skew
                         const minWeight = referenceWeight - (weightGenerator.step * weightGenerator.spread * (1 - skewRatio));
                         const maxWeight = referenceWeight + (weightGenerator.step * weightGenerator.spread * (1 + skewRatio));
 
@@ -291,7 +296,7 @@ export class Standards {
                             for (const lvl in referenceStandard.levels) {
                                 if (!referenceStandard.levels[lvl]) continue;
 
-                                const scalingExponent = .1;
+                                const scalingExponent = this.cfg.weightModifier;
                                 const coefficient = weightGenerator.ratio === "inverse" ?
                                     referenceWeight / currWeight :
                                     currWeight / referenceWeight;
@@ -383,7 +388,6 @@ export class Standards {
         };
 
         const interpolateByAgeAndWeight = (metrics: Metrics): Standard => {
-            console.log(metrics);
             const interpolateByWeight = (targetAge: number): Levels => {
                 const { lower: lowerAgeWeightStandard, upper: upperAgeWeightStandard } = this
                     .byActivity(activity)
@@ -504,7 +508,6 @@ export class Standards {
             .byAge(closestAge)
             .getAll().map((s) => s.metrics.weight);
 
-        console.log({ age, closestAge, weights });
         return weights;
     }
 
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index 49ea9be..2799f75 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -26,6 +26,9 @@
 		},
 		cfg: {
 			maxLevel: "5",
+			weightModfier: ".1",
+			weightSkew: ".4",
+			ageModifier: ".1",
 		},
 	});
 
@@ -38,6 +41,9 @@
 		} as Metrics,
 		cfg: {
 			maxLevel: +input.cfg.maxLevel,
+			weightModifier: +input.cfg.weightModfier,
+			weightSkew: +input.cfg.weightSkew,
+			ageModifier: +input.cfg.ageModifier,
 		} as StandardsConfig,
 	});
 
@@ -135,20 +141,74 @@
 			<fieldset class="group">
 				<legend>Parameters</legend>
 
-				<label class="field w-24">
-					<span>Max level</span>
-					<input
-						type="number"
-						min="1"
-						max="100"
-						placeholder="5"
-						bind:value={input.cfg.maxLevel}
-					/>
-				</label>
+				<fieldset class="group">
+					<legend>General</legend>
+					<label class="field parameter">
+						<span>Max level</span>
+						<input
+							type="number"
+							min="1"
+							max="100"
+							placeholder="5"
+							bind:value={input.cfg.maxLevel}
+						/>
+					</label>
+				</fieldset>
+
+				<fieldset class="group">
+					<legend>Data generation</legend>
+					<label class="field parameter">
+						<span>Weight modifier</span>
+						<input
+							type="number"
+							min="0"
+							max="1"
+							step=".05"
+							placeholder=".1"
+							bind:value={input.cfg.weightModfier}
+						/>
+					</label>
+					<label class="field parameter">
+						<span>Weight skew</span>
+						<input
+							type="number"
+							min="0"
+							max="1"
+							step=".05"
+							placeholder=".1"
+							bind:value={input.cfg.weightSkew}
+						/>
+					</label>
+					<label class="field parameter">
+						<span>Age modifier</span>
+						<input
+							type="number"
+							min="0"
+							max="1"
+							step=".05"
+							placeholder=".1"
+							bind:value={input.cfg.ageModifier}
+						/>
+					</label>
+				</fieldset>
 			</fieldset>
 		</div>
 
 		<h1>{allStandards.byActivity(selected.activity).getMetadata().name}</h1>
+		{#if allStandards
+			.byActivity(selected.activity)
+			.getMetadata().generators.length}
+			<p class="description">
+				(Generated data: {allStandards
+					.byActivity(selected.activity)
+					.getMetadata()
+					.generators.map((g) => g.metric)
+					.join(", ")})
+			</p>
+		{:else}
+			<p class="description">(Generated data: NONE)</p>
+		{/if}
+
 		<section class="gender-section">
 			<h2>{selected.metrics.gender}</h2>
 			{#if !selected.metrics.age}
@@ -246,6 +306,11 @@
 		font-weight: 600;
 	}
 
+	p {
+		font-size: 0.8rem;
+		color: var(--muted);
+	}
+
 	/* Toolbar container */
 	.toolbar {
 		display: grid;
@@ -288,6 +353,11 @@
 		min-width: 160px;
 	}
 
+	.parameter {
+		min-width: 100px;
+		max-width: 100px;
+	}
+
 	/* Label text */
 	.field > span {
 		font-size: 12px;