LME cash unofficial: LME unofficial cash settlement price. The overall trend of these two prices is the same, but the settlement time is different. When dealing with others, it is ok to take any price as the reference basis.

LME 3mth official: LME official March futures price

LME 3mth unofficial: LME unofficial March futures price. The overall trend of March futures price and cash settlement price is the same, but the futures price and spot settlement price will be different every day (depending on the rise and fall of the market outlook, it may be higher or lower than the cash price). The official and unofficial prices are explained with the spot settlement price above.

in fact, the price of LME, like the stock market, has a one-day trend curve, but there are many prices due to different settlement time points. To refer to the price of LME, just study a price for a long time, and their overall trend is the same.

simple understanding, please add something wrong.