In the graph, each bar corresponds to the percentage increase or decrease in the bitcoin price in a month and the number of bars is limited to the number of months in a halving cycle that occur approximately every 4 years.
Each bar represents with a different color what went up or down in a month in each halving cycle.
The graph shows that there are months within the halving that to date the price of bitcoin (BTC) has behaved more or less the same. The months closest to the halving have always gone up and then a strong correction has arrived and at the end of the cycle it has an upward trend again.