We took meter readings from electricity each week. The results were as follows:

    Date       Lighting Meter       Sockets meter      Power Meter       Water heating meter

  1/5/12       85398                   23102                  45128                  27013

  4/5/12       85390                   23182                  45128                  27024

  8/5/12       85906                   23212                  45142                  27032

11/5/12       85437                   23215                  45145                  27045

14/5/12      85459                    23317                  45148                 27052

18/5/12      85491                    23410                  45152                 27066

21/5/12      85499                   23441                   45154                 27075

25/5/12      85530                   23539                   45136                 27092

28/5/12      85547                   23557                   45165                 27098