GB – ElecBandppuThreshold
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'threshold=10.50' - The value that you do not want to exceed for the ppu, ie 10.5p
'band=1.00' - The line on the bill you are checking against. 1 = Band A (the first line)
present=10.65 - The value of the ppu on the Band in the current bill ie Band A, (line 1) is 10.65 ppu
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