Fix the figures to use averages, not wifi

Previously we were using the figure for wifi for bandwidth.

Switch to using average of all the three kinds, to give an idea.

We should make this a weight average in future.

src/1byte.js

@@ -13,12 +13,16 @@ const CO2_PER_KWH_IN_DC_GREY = 519;
 //  2. the *making* the device, which is comparitively high.
 
 const KWH_PER_BYTE_IN_DC = 0.00000000072;
+
+// this is probably best left as something users can define, or
+// a weighted average based on total usage.
+// Pull requests gratefully accepted
 const KWH_PER_BYTE_FOR_NETWORK = 0.00000000488;
 
 const KWH_PER_BYTE_FOR_DEVICES = 0.00000000013
-module.export = {
+module.exports = {
   KWH_PER_BYTE_IN_DC,
   KWH_PER_BYTE_FOR_NETWORK,
   KWH_PER_BYTE_FOR_DEVICES,
-  CO2_PER_KWH_NETWORK_GREY
+  CO2_PER_KWH_IN_DC_GREY
 }

src/co2.test.js

@@ -10,13 +10,13 @@ const pagexray = require('pagexray');
 describe('sustainableWeb', function () {
   describe('co2', function () {
     let har;
-    const TGWF_GREY_VALUE = 0.8193815884799998;
+    const TGWF_GREY_VALUE = 2.0484539712;
     const TGWF_GREEN_VALUE = 0.54704300112;
-    const TGWF_MIXED_VALUE = 0.57128033088;
+    const TGWF_MIXED_VALUE = 1.7485750598399998;
 
     const MILLION = 1000000;
-    const MILLION_GREY = 1.1625599999999998;
-    const MILLION_GREEN = 0.77616;
+    const MILLION_GREY = 2.9064;
+    const MILLION_GREEN = 2.4393599999999998;
 
     beforeEach(function () {
       har = JSON.parse(fs
@@ -31,7 +31,7 @@ describe('sustainableWeb', function () {
       });
 
       it("returns a lower CO2 number for data transfer from domains using entirely 'green' power", function () {
-        expect(co2.perByte(MILLION, false)).toBe(1.1625599999999998);
+        expect(co2.perByte(MILLION, false)).toBe(MILLION_GREY);
         expect(co2.perByte(MILLION, true)).toBe(MILLION_GREEN);
       });
     });

src/hosting.test.js

@@ -15,7 +15,7 @@ describe('hosting', function () {
     har = JSON.parse(fs
       .readFileSync(path.resolve(__dirname, '../data/fixtures/tgwf.har'), 'utf8'))
   });
-  describe('checking all domains on a page object with #checkPage ', async function () {
+  describe('checking all domains on a page object with #checkPage ', function () {
     it('it returns a list of green domains, when passed a page object', async function () {
       const pages = pagexray.convert(har);
       const pageXrayRun = pages[0];
@@ -46,7 +46,7 @@ describe('hosting', function () {
     //   'it returns an empty list, when passed a page object with no green domains'
     // );
   });
-  describe('checking a single domain with #check', async function () {
+  describe('checking a single domain with #check', function () {
     it("tries to use a local database if available ", async function () {
       const res = await hosting.check("google.com", "../url2green.test.db")
       expect(res).toEqual(true)
@@ -57,7 +57,7 @@ describe('hosting', function () {
     })
 
   })
-  describe('implicitly checking multiple domains with #check', async function () {
+  describe('implicitly checking multiple domains with #check', function () {
     it("tries to use a local database if available", async function () {
       const res = await hosting.check(["google.com", "kochindustries.com"], "../url2green.test.db")
       expect(res).toContain("google.com")
@@ -67,7 +67,7 @@ describe('hosting', function () {
       expect(res).toContain("google.com")
     })
   })
-  describe('explicitly checking multiple domains with #checkMulti', async function () {
+  describe('explicitly checking multiple domains with #checkMulti', function () {
     it("tries to use a local database if available", async function () {
       const res = await hosting.checkMulti(["google.com", "kochindustries.com"])
       expect(res).toContain("google.com")