The Kinjun line is by far more important than Tenkan as it takes into consideration more periods (candles): 26. The Kinjun it is calculated by taking the highest high and the lowest low from the past 26 periods and the result it is divided by 2. This way, basically you have the average of that range, and because it is referring to a longer period than the Tenkan, it is more important.
The general interpretation is that this is a confirmation line and it is treated as support or resistance for current price. Because of it’s characteristics, it can be used as a trailing stop line, depending the trading strategy involved. Like mentioned earlier, it is more important than Tenkan and it is acting as an indicator of future price movement. If price is higher the Kinjun, then the expectations are it will continue to climb higher, with the opposite being true as well. If price is below Kinjun, then it should continue to drop.
Kinjun (blue) line is sometimes being viewed as a lagging line, and the further the price from it, the stronger the trend. A strong trending environment indicated by the Ichimku should be characterized by a green cloud, Tenkan line above the Kinjun line, Chinkou above the price, and actual price above both Tenkan and Kinjun lines (in the case of an uptrend). In the case of a downtrend, strong trending environment is indicated by the Tenkan line being below Kinjun, both lines below the cloud, Chinkou below price and actual price below both Tenkan and Kinjun lines.
The recording that comes with this sub chapter deals with all the situations described above and has the purpose of making you understand the valuable tool the Kinjun line is.