If a number in a cell is false -> skip to next cell

This seems to work though I don't get some values that your sample shows:

Enter the formula in D3 and fill down.

Formula:

=IF(B3<=MAX($B$2:$B$45),IF(B3-B2>=2,B3,IF(B3-B2<=-2,B3,"")))

	A	B	C	D
1	Time	Raw data values	Prefered data	My Data
2	0	0	0	0
3	1	1
4	2	0
5	3	2	2	2
6	4	1
7	5	2
8	6	3
9	7	2
10	8	4	4	4
11	9	5
12	10	4
13	11	7	7	7
14	12	6
15	13	8		8
16	14	7
17	15	8
18	16	9	9
19	17	10
20	18	11	11
21	19	10
22	20	12		12
23	21	13	13
24	22	15	15	15
25	23	16
26	24	18	18	18
27	25	19
28	26	20	20
29	27	19
30	28	19
31	29	18	18
32	30	17
33	31	16	16
34	32	15
35	33	13	13	13
36	34	12
37	35	10	10	10
38	36	8	8	8
39	37	7
40	38	6	6
41	39	4	4	4
42	40	3
43	41	2	2
44	42	1
45	43	0	0

The cells that appear blank have "" in them. That is why they appear to be blank. To get rid of them completely, you would have to copy and then Paste Values.
Question: What are you doing that you have to "Paste into a graph"? The graph should be generated from your data and not be a manual operation.

Is this what you are looking for?

I think that I might finally have what you are looking for. I added a couple of columns to summarize your data then graphed from there.

You will have to be careful when using this solution as you don't want to fill cells beyond the limit of your data and note the manual finish. I mistakenly highlighted the first entry as a manual entry which it isn't but the final entry of 0 is a manual entry because 0 is also the first entry and if you don't have the correct entry from column A to go with the zero, the graph will be messed up.

Thank you for the feedback.

You can get what you want by using the ADVANCED filter and filter to another location. This is the result:

Advanced Filter - ndm.png

	A	B
60	Time	Prefered data
61		>=0
62
63
64
65	Time	Prefered data
66	0	0
67	2	0
68	3	2
69	8	4
70	11	7
71	13	8
72	20	12
73	22	15
74	24	18
75	33	13
76	35	10
77	36	8
78	39	4
79	43	0