Assessing the Applicability of Photocatalytic-Concrete Blocks in Reducing the Concentration of Ambient NO₂ of Chandigarh, India, Using Box–Behnken Response Surface Design Technique: A Holistic Sustainable Development Approach

Table 2

Comparison of experimental and predicted responses.

S. no.	Process parameters			Experimental responses	Predicted responses
	TiO2	UV-A irradiance	Relative humidity
	X1	X2	X3	Y1	Y1
	g	mW/cm^2	%	%	%
1	1	3	70	29	31.12
2	3	3	40	56	56
3	3	5	10	48	48.75
4	3	5	70	71	67.50
5	5	1	40	23	21.62
6	5	3	10	30	27.87
7	3	3	40	56	56
8	3	1	70	38	37.25
9	1	3	10	20	17.87
10	3	3	40	56	56
11	3	3	40	56	56
12	5	5	40	49	50.37
13	3	1	10	25	28.5
14	1	1	40	16	14.62
15	5	3	70	40	42.12
16	1	5	40	35	36.37
17	3	3	40	56	56