Table 2: Description of the values of different flags for the complete sample of 1079 C-stars.

Data quality			BLUE	RED
flag(1)	0	excellent	306	803
	1	good	478	70
	2	fair	136	20
	3	noisy or few data	115	150
	4	no data	44	36
Fit quality			BLUE	RED
flag(2)	0	excellent	124	101
	1	good	191	258
	2	fair	470	349
	3	bad	127	168
	4	underivable	123	167
	5	underivable: flag(1)=4	44	36
Detected periodicity			BLUE	RED
flag(3)	0	no periodicity	143	135
	1	1 period	558	608
	2	2 periods	311	292
	3	one period	67	44
		second period uncertain