20
Surface
15
Air
10
5
0
5
10
15
20
0
2
4
6
8
10
12
14
16
18
20
22
Days
a. A slab surface.
20
South Surface
15
Air
10
5
0
5
10
15
20
0
2
4
6
8
10
12
14
16
18
20
22
Days
b. A wall surface.
20
4 cm Into South Side
15
Air
10
5
0
5
10
15
20
0
2
4
6
8
10
12
14
16
18
20
22
Days
c. A point 4 cm into wall.
Figure 3. Thermal history of various surfaces.
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