Number of each type of rating for selected Rhino feature pairs
												Legend
													Strong No
													Weak No
													Weak Yes
													Strong Yes
Features	Pair	SFC	TFC	Bugs
Unary + operator & Addition operator	Rhino #1	0.33	0.27	15
Addition operator & Subtraction operator	Rhino #2	0.71	0.28	17
Date.prototype.toString & Date.prototype.valueOf	Rhino #3	0.75	0.74	2
Unicode format control chars & ToPrimitive	Rhino #4	0	0.08	0
parseInt & parseFloat	Rhino #5	0.4	0.46	2
SQRT2 & Date.prototype.getTimezoneOffset	Rhino #6	0	0.85	1