p4range | p4range[n] OPERATOR (INDICATOR or POSITIVE NUMBER) , where n is a positive integer >= 0. | Returns the percentage change from the lowest price among day n, day n-1, day n-2 and day n-3 to the highest price among day n, day n-1, day n-2 and day n-3 where n=0 is the last trading day, n=1 is the previous day, etc. | (p4range[0] < 3) |