6 t8 ^; d7 `4 E0 o2 X" F( hI think the Sensor scale they have created sounds reasonable and credible. The comparisons were performed not based on single test but several times, it is fair.# x! b* v8 m9 a2 f+ t! n' l* l
Besides, this website has been used by many professional instituts which makes it more reliable.