I currently have a UltraMaXX HW 2021 hot water meter. Starting meter read: 00068.740 m3Starting meter read recorded on bill: 6,874 Ending meter read: 00071.546 m3Ending meter read recorded on bill: 7,154.03 This equals a total usage of 280.03 for the period. According to my bill, the total usage for the period: 280.03 units x 10 x 1.006329 (conversion factor) = 2,818mj However, the actual calculation should be: 280.03 x 1.006329 (conversion factor) = 281.8mj This is because the values have al ...