diff --git a/lib/sensiplan.js b/lib/sensiplan.js
index 1364665..45e2469 100644
--- a/lib/sensiplan.js
+++ b/lib/sensiplan.js
@@ -1,7 +1,6 @@
-function getTemperatureStatus(targetDateString, previousDaysInCycle) {
-  const tempValues = previousDaysInCycle
-    .filter(day => day.temperature)
-    .map(day => !day.temperature.exclude && rounded(day.temperature.value, 0.05))
+function detectTemperatureShift(temperaturesOfCycle) {
+  // sensiplan rounds temps to the nearest 0.05
+  const tempValues = temperaturesOfCycle.map(val => rounded(val, 0.05))
 
   let detectingPotentialHighLevel = false
 
@@ -49,5 +48,5 @@ function rounded(val, step) {
 }
 
 export {
-  getTemperatureStatus
+  detectTemperatureShift
 }
\ No newline at end of file
diff --git a/test/fixtures/first-exception-rule-no-shift.json b/test/fixtures/first-exception-rule-no-shift.json
deleted file mode 100644
index 559aefb..0000000
--- a/test/fixtures/first-exception-rule-no-shift.json
+++ /dev/null
@@ -1,67 +0,0 @@
-[{
-  "date": "2018-06-04",
-  "temperature": {
-    "value": 36.7,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-05",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-06",
-  "temperature": {
-    "value": 36.47,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-07",
-  "temperature": {
-    "value": 36.49,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-09",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-10",
-  "temperature": {
-    "value": 36.62,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-11",
-  "temperature": {
-    "value": 36.55,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-12",
-  "temperature": {
-    "value": 36.8,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-13",
-  "temperature": {
-    "value": 36.86,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-14",
-  "temperature": {
-    "value": 36.77,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-15",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}]
\ No newline at end of file
diff --git a/test/fixtures/first-exception-rule.json b/test/fixtures/first-exception-rule.json
deleted file mode 100644
index 2b963ef..0000000
--- a/test/fixtures/first-exception-rule.json
+++ /dev/null
@@ -1,67 +0,0 @@
-[{
-  "date": "2018-06-04",
-  "temperature": {
-    "value": 36.7,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-05",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-06",
-  "temperature": {
-    "value": 36.47,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-07",
-  "temperature": {
-    "value": 36.49,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-09",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-10",
-  "temperature": {
-    "value": 36.62,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-11",
-  "temperature": {
-    "value": 36.55,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-12",
-  "temperature": {
-    "value": 36.8,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-13",
-  "temperature": {
-    "value": 36.86,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-14",
-  "temperature": {
-    "value": 36.77,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-15",
-  "temperature": {
-    "value": 36.63,
-    "exclude": null
-  }
-}]
\ No newline at end of file
diff --git a/test/fixtures/lower-temps.json b/test/fixtures/lower-temps.json
deleted file mode 100644
index 20ae088..0000000
--- a/test/fixtures/lower-temps.json
+++ /dev/null
@@ -1,31 +0,0 @@
-[{
-  "date": "2018-06-04",
-  "temperature": {
-    "value": 36.7,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-05",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-06",
-  "temperature": {
-    "value": 36.47,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-07",
-  "temperature": {
-    "value": 36.49,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-09",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}]
\ No newline at end of file
diff --git a/test/fixtures/regular-rule-no-shift.json b/test/fixtures/regular-rule-no-shift.json
deleted file mode 100644
index ca99c5a..0000000
--- a/test/fixtures/regular-rule-no-shift.json
+++ /dev/null
@@ -1,61 +0,0 @@
-[{
-  "date": "2018-06-04",
-  "temperature": {
-    "value": 36.7,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-05",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-06",
-  "temperature": {
-    "value": 36.47,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-07",
-  "temperature": {
-    "value": 36.49,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-09",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-10",
-  "temperature": {
-    "value": 36.62,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-11",
-  "temperature": {
-    "value": 36.55,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-12",
-  "temperature": {
-    "value": 36.8,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-13",
-  "temperature": {
-    "value": 36.86,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-14",
-  "temperature": {
-    "value": 36.77,
-    "exclude": null
-  }
-}]
\ No newline at end of file
diff --git a/test/fixtures/regular-rule-shift.json b/test/fixtures/regular-rule-shift.json
deleted file mode 100644
index 74bd559..0000000
--- a/test/fixtures/regular-rule-shift.json
+++ /dev/null
@@ -1,61 +0,0 @@
-[{
-  "date": "2018-06-04",
-  "temperature": {
-    "value": 36.7,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-05",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-06",
-  "temperature": {
-    "value": 36.47,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-07",
-  "temperature": {
-    "value": 36.49,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-09",
-  "temperature": {
-    "value": 36.57,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-10",
-  "temperature": {
-    "value": 36.62,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-11",
-  "temperature": {
-    "value": 36.55,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-12",
-  "temperature": {
-    "value": 36.8,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-13",
-  "temperature": {
-    "value": 36.86,
-    "exclude": null
-  }
-}, {
-  "date": "2018-06-14",
-  "temperature": {
-    "value": 36.8,
-    "exclude": null
-  }
-}]
\ No newline at end of file
diff --git a/test/sensiplan.spec.js b/test/sensiplan.spec.js
index 055f6db..3f69d2a 100644
--- a/test/sensiplan.spec.js
+++ b/test/sensiplan.spec.js
@@ -1,10 +1,5 @@
 import chai from 'chai'
-import { getTemperatureStatus } from '../lib/sensiplan'
-import tempShift from './fixtures/regular-rule-shift.json'
-import noTempShift from './fixtures/regular-rule-no-shift.json'
-import lowerTempDays from './fixtures/lower-temps.json'
-import firstException from './fixtures/first-exception-rule.json'
-import firstExceptionNoShift from './fixtures/first-exception-rule-no-shift.json'
+import { detectTemperatureShift } from '../lib/sensiplan'
 
 const expect = chai.expect
 
@@ -12,7 +7,8 @@ describe.only('sensiplan', () => {
   describe('getTemperatureStatus', () => {
     describe('regular rule', () => {
       it('reports lower temperature status before shift', function () {
-        const status = getTemperatureStatus('2018-06-09', lowerTempDays)
+        const lowerTemps = [36.7, 36.57, 36.47, 36.49, 36.57]
+        const status = detectTemperatureShift(lowerTemps)
         expect(status).to.eql({
           low: [36.7, 36.55, 36.45, 36.5, 36.55],
           ltl: 36.7,
@@ -22,7 +18,8 @@ describe.only('sensiplan', () => {
       })
 
       it('detects temperature shift correctly', function () {
-        const status = getTemperatureStatus('2018-06-14', tempShift)
+        const tempShift = [36.7, 36.57, 36.47, 36.49, 36.57, 36.62, 36.55, 36.8, 36.86, 36.8]
+        const status = detectTemperatureShift(tempShift)
         expect(status).to.eql({
           low: [36.7, 36.55, 36.45, 36.5, 36.55, 36.6, 36.55],
           ltl: 36.6,
@@ -32,7 +29,8 @@ describe.only('sensiplan', () => {
       })
 
       it('detects missing temperature shift correctly', function () {
-        const status = getTemperatureStatus('2018-06-14', noTempShift)
+        const noTempShift = [36.7, 36.57, 36.47, 36.49, 36.57, 36.62, 36.55, 36.8, 36.86, 36.77]
+        const status = detectTemperatureShift(noTempShift)
         expect(status).to.eql({
           low: [36.7, 36.55, 36.45, 36.5, 36.55, 36.6, 36.55],
           ltl: 36.6,
@@ -44,7 +42,8 @@ describe.only('sensiplan', () => {
 
     describe('1st exception rule', () => {
       it('detects temperature shift', function () {
-        const status = getTemperatureStatus('2018-06-14', firstException)
+        const firstException = [36.7, 36.57, 36.47, 36.49, 36.57, 36.62, 36.55, 36.8, 36.86, 36.77, 36.63]
+        const status = detectTemperatureShift(firstException)
         expect(status).to.eql({
           low: [36.7, 36.55, 36.45, 36.5, 36.55, 36.6, 36.55],
           ltl: 36.6,
@@ -54,7 +53,8 @@ describe.only('sensiplan', () => {
       })
 
       it('detects missing temperature shift correctly', function () {
-        const status = getTemperatureStatus('2018-06-14', firstExceptionNoShift)
+        const firstExceptionNoShift = [36.7, 36.57, 36.47, 36.49, 36.57, 36.62, 36.55, 36.8, 36.86, 36.77, 36.57]
+        const status = detectTemperatureShift(firstExceptionNoShift)
         expect(status).to.eql({
           low: [36.7, 36.55, 36.45, 36.5, 36.55, 36.6, 36.55],
           ltl: 36.6,