Managing blank values in dataset

T

transgenesis

New Member
Joined
May 11, 2018
Messages
3
Hello,

I have a dataset corresponding to snowfall sum per day, for a number of years (30+). There are often blanks for certain days. Where there is a blank day in a month, I wish to set the entire month (every day in the month) a value M (for missing) or set the entire month blank, either is fine. The data looks as such, days and years are received sequentially. Any ideas on where to start?

[TABLE="width: 256"]
<colgroup><col width="64" span="4" style="width:48pt"> </colgroup><tbody>[TR]
[TD="class: xl66, width: 64"]Month[/TD]
[TD="class: xl66, width: 64"]Day[/TD]
[TD="class: xl66, width: 64"]Year[/TD]
[TD="class: xl66, width: 64"]Snowfall[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]2[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]3[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]4[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]5[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]6[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]7[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]8[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]9[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]10[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]11[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0.2[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]13[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]14[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]15[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]16[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]17[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]18[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]19[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]20[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]21[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]22[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]23[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]24[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]25[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]26[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]27[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]4[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]28[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]2.2[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]29[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]30[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]31[/TD]
[TD="class: xl65"]2010[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]2[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]3[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]4[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]5[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]6[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]7[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]8[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]1.5[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]9[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]1[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]10[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]11[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]12[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]9[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]13[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]4.5[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]14[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]15[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]16[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]0.4[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]17[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]18[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]1.8[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]19[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]3[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]20[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]21[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]4.5[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]22[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]0[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]23[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]24[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]25[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]1.5[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]26[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]0.3[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]27[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]4[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]28[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]29[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"]0.2[/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]30[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
[TR]
[TD="class: xl65"]1[/TD]
[TD="class: xl65"]31[/TD]
[TD="class: xl65"]2011[/TD]
[TD="class: xl65"] [/TD]
[/TR]
</tbody>[/TABLE]
 
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Excel 2016 (Windows) 32 bit
[Table="width:, class:head"][tr=bgcolor:#E0E0F0][th] [/th][th]
A​
[/th][th]
B​
[/th][th]
C​
[/th][th]
D​
[/th][th]
E​
[/th][th]
F​
[/th][/tr]
[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
1​
[/td][td]Month[/td][td]Day[/td][td]Year[/td][td]Snowfall[/td][td]Result[/td][td] formula in E2 copied down[/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
2​
[/td][td]
12​
[/td][td]
1​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td] =IF(COUNTIFS(A:A,A2,C:C,C2,D:D,"")>0,"M",D2)[/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
3​
[/td][td]
12​
[/td][td]
2​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
4​
[/td][td]
12​
[/td][td]
3​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
5​
[/td][td]
12​
[/td][td]
4​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
6​
[/td][td]
12​
[/td][td]
5​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
7​
[/td][td]
12​
[/td][td]
6​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
8​
[/td][td]
12​
[/td][td]
7​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
9​
[/td][td]
12​
[/td][td]
8​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
10​
[/td][td]
12​
[/td][td]
9​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
11​
[/td][td]
12​
[/td][td]
10​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
12​
[/td][td]
12​
[/td][td]
11​
[/td][td]
2010​
[/td][td]
0.2​
[/td][td]
0.2​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
13​
[/td][td]
12​
[/td][td]
12​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
14​
[/td][td]
12​
[/td][td]
13​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
15​
[/td][td]
12​
[/td][td]
14​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
16​
[/td][td]
12​
[/td][td]
15​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
17​
[/td][td]
12​
[/td][td]
16​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
18​
[/td][td]
12​
[/td][td]
17​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
19​
[/td][td]
12​
[/td][td]
18​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
20​
[/td][td]
12​
[/td][td]
19​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
21​
[/td][td]
12​
[/td][td]
20​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
22​
[/td][td]
12​
[/td][td]
21​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
23​
[/td][td]
12​
[/td][td]
22​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
24​
[/td][td]
12​
[/td][td]
23​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
25​
[/td][td]
12​
[/td][td]
24​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
26​
[/td][td]
12​
[/td][td]
25​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
27​
[/td][td]
12​
[/td][td]
26​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
28​
[/td][td]
12​
[/td][td]
27​
[/td][td]
2010​
[/td][td]
4​
[/td][td]
4​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
29​
[/td][td]
12​
[/td][td]
28​
[/td][td]
2010​
[/td][td]
2.2​
[/td][td]
2.2​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
30​
[/td][td]
12​
[/td][td]
29​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
31​
[/td][td]
12​
[/td][td]
30​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
32​
[/td][td]
12​
[/td][td]
31​
[/td][td]
2010​
[/td][td]
0​
[/td][td]
0​
[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
33​
[/td][td]
1​
[/td][td]
1​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
34​
[/td][td]
1​
[/td][td]
2​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
35​
[/td][td]
1​
[/td][td]
3​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
36​
[/td][td]
1​
[/td][td]
4​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
37​
[/td][td]
1​
[/td][td]
5​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
38​
[/td][td]
1​
[/td][td]
6​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
39​
[/td][td]
1​
[/td][td]
7​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
40​
[/td][td]
1​
[/td][td]
8​
[/td][td]
2011​
[/td][td]
1.5​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
41​
[/td][td]
1​
[/td][td]
9​
[/td][td]
2011​
[/td][td]
1​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
42​
[/td][td]
1​
[/td][td]
10​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
43​
[/td][td]
1​
[/td][td]
11​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
44​
[/td][td]
1​
[/td][td]
12​
[/td][td]
2011​
[/td][td]
9​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
45​
[/td][td]
1​
[/td][td]
13​
[/td][td]
2011​
[/td][td]
4.5​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
46​
[/td][td]
1​
[/td][td]
14​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
47​
[/td][td]
1​
[/td][td]
15​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
48​
[/td][td]
1​
[/td][td]
16​
[/td][td]
2011​
[/td][td]
0.4​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
49​
[/td][td]
1​
[/td][td]
17​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
50​
[/td][td]
1​
[/td][td]
18​
[/td][td]
2011​
[/td][td]
1.8​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
51​
[/td][td]
1​
[/td][td]
19​
[/td][td]
2011​
[/td][td]
3​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
52​
[/td][td]
1​
[/td][td]
20​
[/td][td]
2011​
[/td][td]
0​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
53​
[/td][td]
1​
[/td][td]
21​
[/td][td]
2011​
[/td][td]
4.5​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
54​
[/td][td]
1​
[/td][td]
22​
[/td][td]
2011​
[/td][td]
0​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
55​
[/td][td]
1​
[/td][td]
23​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
56​
[/td][td]
1​
[/td][td]
24​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
57​
[/td][td]
1​
[/td][td]
25​
[/td][td]
2011​
[/td][td]
1.5​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
58​
[/td][td]
1​
[/td][td]
26​
[/td][td]
2011​
[/td][td]
0.3​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
59​
[/td][td]
1​
[/td][td]
27​
[/td][td]
2011​
[/td][td]
4​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
60​
[/td][td]
1​
[/td][td]
28​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
61​
[/td][td]
1​
[/td][td]
29​
[/td][td]
2011​
[/td][td]
0.2​
[/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
62​
[/td][td]
1​
[/td][td]
30​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]

[tr=bgcolor:#FFFFFF][td=bgcolor:#E0E0F0]
63​
[/td][td]
1​
[/td][td]
31​
[/td][td]
2011​
[/td][td][/td][td]M[/td][td][/td][/tr]
[/table][Table="width:, class:grid"][tr][td]Sheet: Sheet1[/td][/tr][/table]
 
Upvote 0
transgenesis said:
I have a dataset corresponding to snowfall sum per day, for a number of years (30+).
Click to expand...
Whilst the previous suggestion will work, if your data set is 30 years or more of daily data, the processing required by it is much larger than required. For 30 years of daily data it took 150 seconds on my machine. For the same data, this version took less than 0.02 seconds & produced the same results.

Formula in E2, copied down.

=IF(A2=A1,IF(E1="M","M",D2),IF(COUNTIFS(A2:A32,A2,D2:D32,""),"M",D2))
 
Last edited:
Upvote 0
Thank you both for the quick reply, both options work, and are exactly what I was looking to do. Appreciate your time.
 
Upvote 0
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