<?php // values, guess, Result return [ [ -0.02124484827341, [ -70000, 12000, 15000, 18000, 21000, ], ], [ 0.086630948036519995, [ -70000, 12000, 15000, 18000, 21000, 26000, ], ], [ -0.1821374641455, [ -70000, 12000, 15000, 18000, ], 0.10000000000000001, ], [ -0.13618951095869, [ -100, [ 20, 24, 28.800000000000001, ], ], ], [ 0.13057575637152699, [ -100, [ 20, 24, 28.800000000000001, 34.560000000000002, 41.469999999999999, ], ], ], ];