-
-scale_factor = {}
-scale_factor['E'] = 1e18
-scale_factor['P'] = 1e15
-scale_factor['T'] = 1e12
-scale_factor['G'] = 1e9
-scale_factor['M'] = 1e6
-scale_factor['k'] = 1e3
-scale_factor['m'] = 1e-3
-scale_factor['u'] = 1e-6
-scale_factor['n'] = 1e-9
-scale_factor['p'] = 1e-12
-scale_factor['f'] = 1e-15
-scale_factor['a'] = 1e-18
-