Please help me with calculating the crossing point of the regression lines of tw part of one graph, the X axis is column B and Y axis is column D, and please formta the axis to logaritm, I want to crossing point of the regression lines for the early flat part and non linear dropping part of the graph

 A B C D E F G 1|1 0.1 -0.00392 -25.53 25.69 12.79 10.4 1|2 0.1272 -0.00124 -102.4 25.69 23.53 21.14 1|3 0.1619 -0.00038 -422.1 25.69 34.27 31.88 1|4 …