HL5 = (hi/lo)*close
HL4 = ( ((hi/lo)+0.83)/1.83 ) *close
HL3 = ( ((hi/lo)+2.66)/3.66 ) *close
LL5 = close - (HL5-close)
LL4 = close - (HL4-close)
LL3 = close - (HL3-close)