public function dataProviderForCI() { return [[[[1, 2], [2, 3], [4, 5], [5, 7], [6, 8]], 2, 0.05, 0.2644479205], [[[1, 2], [2, 3], [4, 5], [5, 7], [6, 8]], 3, 0.05, 0.3966718808], [[[1, 2], [2, 3], [4, 5], [5, 7], [6, 8]], 3, 0.1, 0.3045778477]]; }