HCOTEG151530 - Gains and Losses shown in trade records: Causes of variation
Variations in loss figures may be explained by:
- 
    
increased rates of evaporation arising from
 - steeply fluctuating temperatures;
 - high winds; and
 - 
    
changes in operational patterns (e.g. smaller receipt quantities, lower levels in storage tanks, blending innovations):
 - accounting tolerances (e.g. 2mm in tank dips):
 - an accident dealt with under HCOTEG152000 ’Accidents in the course of delivery’ and ‘Accidents in an installation’.