<graphviz>
digraph G {
1 [label="Month", shape = ellipse];
2 [label="Hour", shape = ellipse];
3 [label="t14", shape = record];
2 -> 3[ label = 0 ];
4 [label="t18", shape = record];
2 -> 4[ label = 1 ];
5 [label="t18", shape = record];
2 -> 5[ label = 2 ];
6 [label="t18", shape = record];
2 -> 6[ label = 3 ];
7 [label="t14", shape = record];
2 -> 7[ label = 4 ];
8 [label="t18", shape = record];
2 -> 8[ label = 6 ];
9 [label="t14", shape = record];
2 -> 9[ label = 8 ];
1 -> 2[ label = 0 ];
10 [label="Hour", shape = ellipse];
11 [label="t15", shape = record];
10 -> 11[ label = 0 ];
12 [label="t20", shape = record];
10 -> 12[ label = 1 ];
13 [label="t20", shape = record];
10 -> 13[ label = 6 ];
14 [label="Day", shape = ellipse];
15 [label="t20", shape = record];
14 -> 15[ label = 0 ];
10 -> 14[ label = 7 ];
16 [label="t15", shape = record];
10 -> 16[ label = 8 ];
1 -> 10[ label = 1 ];
17 [label="Hour", shape = ellipse];
18 [label="t27", shape = record];
17 -> 18[ label = 0 ];
19 [label="t24", shape = record];
17 -> 19[ label = 2 ];
20 [label="t24", shape = record];
17 -> 20[ label = 3 ];
21 [label="t24", shape = record];
17 -> 21[ label = 4 ];
22 [label="Day", shape = ellipse];
23 [label="t27", shape = record];
22 -> 23[ label = 0 ];
17 -> 22[ label = 5 ];
24 [label="t24", shape = record];
17 -> 24[ label = 7 ];
25 [label="t27", shape = record];
17 -> 25[ label = 8 ];
1 -> 17[ label = 2 ];
26 [label="Hour", shape = ellipse];
27 [label="t16", shape = record];
26 -> 27[ label = 0 ];
28 [label="t20", shape = record];
26 -> 28[ label = 1 ];
29 [label="Day", shape = ellipse];
30 [label="t20", shape = record];
29 -> 30[ label = 0 ];
26 -> 29[ label = 2 ];
31 [label="t20", shape = record];
26 -> 31[ label = 4 ];
32 [label="t20", shape = record];
26 -> 32[ label = 5 ];
33 [label="Day", shape = ellipse];
34 [label="t20", shape = record];
33 -> 34[ label = 0 ];
26 -> 33[ label = 6 ];
35 [label="t20", shape = record];
26 -> 35[ label = 7 ];
36 [label="t16", shape = record];
26 -> 36[ label = 8 ];
1 -> 26[ label = 3 ];
37 [label="Hour", shape = ellipse];
38 [label="t14", shape = record];
37 -> 38[ label = 0 ];
39 [label="t14", shape = record];
37 -> 39[ label = 2 ];
40 [label="t18", shape = record];
37 -> 40[ label = 6 ];
41 [label="t14", shape = record];
37 -> 41[ label = 8 ];
1 -> 37[ label = 4 ];

</graphviz>
Widzimy tutaj że atrybut Day został zagregowany w jedną wartość. Praktycznie więc, zostało wyliczone że ten atrybut w żaden sposób nie powinien wpływać na wynik. Najprościej byłoby nie brać tego atrybutu w procesie budowy drzewa, ale byłoby to zbyt skomplikowane do implementowanie na etapie napisanego już kodu. Nie wpływa to jednak na wyniki testów i funkcjonowanie (chociaż wydłuża czas obliczeń)