diff --git a/build.gradle.kts b/build.gradle.kts
index c38b563..95827ee 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -14,7 +14,7 @@ allprojects {
 
 val dataforgeVersion by extra("0.5.2")
 val tablesVersion: String by extra("0.1.5")
-val kmathVersion by extra("0.3.0-dev-18")
+val kmathVersion by extra("0.3.0")
 val plotlyVersion: String by extra("0.5.0")
 
 ksciencePublish{
diff --git a/numass-analysis/src/jvmMain/kotlin/ru/inr/mass/data/analysis/timeHistogram.kt b/numass-analysis/src/jvmMain/kotlin/ru/inr/mass/data/analysis/timeHistogram.kt
index 2a6aa79..44c25e9 100644
--- a/numass-analysis/src/jvmMain/kotlin/ru/inr/mass/data/analysis/timeHistogram.kt
+++ b/numass-analysis/src/jvmMain/kotlin/ru/inr/mass/data/analysis/timeHistogram.kt
@@ -1,12 +1,14 @@
 package ru.inr.mass.data.analysis
 
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.flow.transform
 import kotlinx.coroutines.runBlocking
 import ru.inr.mass.data.api.NumassBlock
 import ru.inr.mass.data.api.getTime
-import space.kscience.kmath.histogram.UnivariateHistogram
+import space.kscience.kmath.histogram.Histogram
+import space.kscience.kmath.histogram.UniformHistogram1D
+import space.kscience.kmath.histogram.uniform1D
+import space.kscience.kmath.operations.DoubleField
 import kotlin.math.max
 import kotlin.time.DurationUnit
 
@@ -23,7 +25,7 @@ public fun <T, R> Flow<T>.zipWithNext(block: (l: T, r: T) -> R): Flow<R> {
 public fun NumassBlock.timeHistogram(
     binSize: Double,
     extractor: NumassEventExtractor = NumassEventExtractor.EVENTS_ONLY,
-): UnivariateHistogram = UnivariateHistogram.uniform(binSize) {
+): UniformHistogram1D<Double> = Histogram.uniform1D(DoubleField, binSize).produce {
     runBlocking {
         extractor.extract(this@timeHistogram).zipWithNext { l, r ->
             if(l.owner == r.owner) {
diff --git a/numass-model/src/commonMain/kotlin/ru/inr/mass/models/NumassTransmission.kt b/numass-model/src/commonMain/kotlin/ru/inr/mass/models/NumassTransmission.kt
index a9ce83f..438865f 100644
--- a/numass-model/src/commonMain/kotlin/ru/inr/mass/models/NumassTransmission.kt
+++ b/numass-model/src/commonMain/kotlin/ru/inr/mass/models/NumassTransmission.kt
@@ -7,8 +7,8 @@ package ru.inr.mass.models
 
 import space.kscience.kmath.expressions.Symbol
 import space.kscience.kmath.expressions.symbol
+import space.kscience.kmath.functions.Function1D
 import space.kscience.kmath.functions.PiecewisePolynomial
-import space.kscience.kmath.functions.UnivariateFunction
 import space.kscience.kmath.functions.asFunction
 import space.kscience.kmath.integration.*
 import space.kscience.kmath.operations.DoubleField
@@ -84,7 +84,7 @@ public class NumassTransmission(
         public val trap: Symbol by symbol
         public val thickness: Symbol by symbol
 
-        private val cache = HashMap<Int, UnivariateFunction<Double>>()
+        private val cache = HashMap<Int, Function1D<Double>>()
 
         private const val ION_POTENTIAL = 15.4//eV
 
@@ -130,7 +130,7 @@ public class NumassTransmission(
             return exp(-x)
         }
 
-        private fun getCachedSpectrum(order: Int): UnivariateFunction<Double> {
+        private fun getCachedSpectrum(order: Int): Function1D<Double> {
             return when {
                 order <= 0 -> error("Non-positive loss cache order")
                 order == 1 -> singleScatterFunction
@@ -147,7 +147,7 @@ public class NumassTransmission(
          * @param order
          * @return
          */
-        private fun getLoss(order: Int): UnivariateFunction<Double> = getCachedSpectrum(order)
+        private fun getLoss(order: Int): Function1D<Double> = getCachedSpectrum(order)
 
         private fun getLossProbDerivs(x: Double): List<Double> {
             val res = ArrayList<Double>()
@@ -260,7 +260,7 @@ public class NumassTransmission(
          * @return
          */
         @Synchronized
-        private fun getNextLoss(margin: Double, loss: UnivariateFunction<Double>): PiecewisePolynomial<Double> {
+        private fun getNextLoss(margin: Double, loss: Function1D<Double>): PiecewisePolynomial<Double> {
             val res = { x: Double ->
                 DoubleField.simpsonIntegrator.integrate(5.0..margin, IntegrandMaxCalls(200)) { y ->
                     loss(x - y) * singleScatterFunction(y)
@@ -324,7 +324,7 @@ public class NumassTransmission(
         private val w1 = 1.85
         private val w2 = 12.5
 
-        public val singleScatterFunction: UnivariateFunction<Double> = { eps: Double ->
+        public val singleScatterFunction: Function1D<Double> = { eps: Double ->
             when {
                 eps <= 0 -> 0.0
                 eps <= b -> {
diff --git a/numass-model/src/commonMain/kotlin/ru/inr/mass/models/functionCaching.kt b/numass-model/src/commonMain/kotlin/ru/inr/mass/models/functionCaching.kt
index b71eb34..0e08af7 100644
--- a/numass-model/src/commonMain/kotlin/ru/inr/mass/models/functionCaching.kt
+++ b/numass-model/src/commonMain/kotlin/ru/inr/mass/models/functionCaching.kt
@@ -1,15 +1,15 @@
 package ru.inr.mass.models
 
 
+import space.kscience.kmath.functions.Function1D
 import space.kscience.kmath.functions.PiecewisePolynomial
-import space.kscience.kmath.functions.UnivariateFunction
 import space.kscience.kmath.interpolation.SplineInterpolator
 import space.kscience.kmath.interpolation.interpolatePolynomials
 import space.kscience.kmath.operations.DoubleField
 import space.kscience.kmath.structures.DoubleBuffer
 import kotlin.math.abs
 
-public fun UnivariateFunction<Double>.cache(
+public fun Function1D<Double>.cache(
     range: ClosedFloatingPointRange<Double>,
     numCachePoints: Int,
 ): PiecewisePolynomial<Double> {
diff --git a/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/extract_data.kt b/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/extract_data.kt
index 293ecc4..be91dc7 100644
--- a/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/extract_data.kt
+++ b/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/extract_data.kt
@@ -1,7 +1,5 @@
 package ru.inr.mass.scripts
 
-import kotlinx.datetime.DateTimeUnit
-import kotlinx.datetime.plus
 import ru.inr.mass.data.api.NumassBlock
 import ru.inr.mass.data.api.channels
 import ru.inr.mass.workspace.Numass
@@ -29,8 +27,9 @@ fun main() {
     channels.forEach { (key, block) ->
         targetDir.resolve("channel-$key.csv").write {
             block.listFrames().forEach { frame ->
-                val frameTime =  pointTime.plus(frame.timeOffset, DateTimeUnit.NANOSECOND)
-                writeUtf8String("$frameTime,")
+//                val frameTime =  pointTime.plus(frame.timeOffset, DateTimeUnit.NANOSECOND)
+//                writeUtf8String("$frameTime,")
+                writeUtf8String("${frame.timeOffset},")
                 val line = frame.signal.joinToString(",", postfix = "\n" )
                 writeUtf8String(line)
             }
diff --git a/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/gun_sim.kt b/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/gun_sim.kt
index c380d89..ea9c656 100644
--- a/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/gun_sim.kt
+++ b/numass-workspace/src/main/kotlin/ru/inr/mass/scripts/gun_sim.kt
@@ -5,8 +5,8 @@ import space.kscience.kmath.functions.asFunction
 import space.kscience.kmath.integration.integrate
 import space.kscience.kmath.integration.splineIntegrator
 import space.kscience.kmath.integration.value
-import space.kscience.kmath.interpolation.SplineInterpolator
 import space.kscience.kmath.interpolation.interpolatePolynomials
+import space.kscience.kmath.interpolation.splineInterpolator
 import space.kscience.kmath.operations.DoubleField
 import space.kscience.kmath.real.step
 import space.kscience.plotly.Plotly
@@ -28,7 +28,7 @@ fun main() {
             Pair(e.toDouble(), p.toDouble())
         }.toList()
 
-    val interpolated = SplineInterpolator.double
+    val interpolated = DoubleField.splineInterpolator
         .interpolatePolynomials(backScatteringSpectrum)
         .asFunction(DoubleField, 0.0)
 
diff --git a/numass-workspace/src/main/kotlin/ru/inr/mass/workspace/plots.kt b/numass-workspace/src/main/kotlin/ru/inr/mass/workspace/plots.kt
index 01d2699..8372ffb 100644
--- a/numass-workspace/src/main/kotlin/ru/inr/mass/workspace/plots.kt
+++ b/numass-workspace/src/main/kotlin/ru/inr/mass/workspace/plots.kt
@@ -12,8 +12,8 @@ import ru.inr.mass.data.proto.HVData
 import ru.inr.mass.data.proto.NumassDirectorySet
 import space.kscience.dataforge.values.asValue
 import space.kscience.dataforge.values.double
-import space.kscience.kmath.histogram.UnivariateHistogram
-import space.kscience.kmath.histogram.center
+import space.kscience.kmath.domains.center
+import space.kscience.kmath.histogram.Histogram1D
 import space.kscience.kmath.misc.UnstableKMathAPI
 import space.kscience.kmath.operations.asIterable
 import space.kscience.kmath.structures.Buffer
@@ -26,9 +26,9 @@ import kotlin.time.DurationUnit
  * Plot a kmath histogram
  */
 @OptIn(UnstableKMathAPI::class)
-fun Plot.histogram(histogram: UnivariateHistogram, block: Scatter.() -> Unit = {}): Trace = scatter {
+fun Plot.histogram(histogram: Histogram1D<Double, Double>, block: Scatter.() -> Unit = {}): Trace = scatter {
     x.numbers = histogram.bins.map { it.domain.center }
-    y.numbers = histogram.bins.map { it.value }
+    y.numbers = histogram.bins.map { it.binValue }
     line.shape = LineShape.hv
     block()
 }
@@ -58,7 +58,7 @@ fun Plotly.plotNumassBlock(
     block: NumassBlock,
     amplitudeBinSize: UInt = 20U,
     eventExtractor: NumassEventExtractor = NumassEventExtractor.EVENTS_ONLY,
-    splitChannels: Boolean = true
+    splitChannels: Boolean = true,
 ): PlotlyFragment = Plotly.fragment {
     plot {
         runBlocking {
@@ -105,11 +105,11 @@ fun Plotly.plotNumassSet(
     h2 { +"Time spectra" }
 
     plot {
-        spectra.forEach { (point,spectrum) ->
+        spectra.forEach { (point, spectrum) ->
             val countRate = runBlocking {
                 spectrum.sum().toDouble() / point.getLength().toDouble(DurationUnit.SECONDS)
             }
-            val binSize = 1.0 / countRate  / 10.0
+            val binSize = 1.0 / countRate / 10.0
             histogram(point.timeHistogram(binSize)) {
                 name = point.title
             }