A1 = 0.1
A2 = 1
A3 = 2
A4 = 5
B1 = 85
B2 = 200
B3 = 235
B4 = 280
P_1: (A1, B1)
P_2: (A2, B2)
P_3: (A3, B3)
P_4: (A4, B4)
liste1: {P_1, P_2, P_3, P_4}
a = FitLineY(liste1)
g = FitPow(liste1)
f = FitExp(liste1)
h = FitLog(liste1)