. 2022 Nov 21;12:20026. doi: 10.1038/s41598-022-24714-4

Table 3.

Diameter of the top (D $_{Top}$ ), middle (D $_{Middle}$ ) and bottom (D $_{Bottom}$ ) of the fresh culm.

Label		R1	R2	R3	R4
$D_{Top}$ (mm)	Range/average	2.2-2.8 / 2.4	2.1-2.6 / 2.3	2.3-2.6 / 2.5	2.1-2.7 / 2.4
$D_{Middle}$ (mm)	Range/average	4.2-4.7 / 4.5	4.2-4.7 / 4.4	4.4-4.7 / 4.6	4.3-4.6 / 4.4
$D_{Bottom}$ (mm)	Range/average	4.9-6.0 / 5.7	5.1-5.9 / 5.6	5.2-6.2 / 5.8	4.7-6.0 / 5.6
$T_{B}$ (µ m)	Top	154±7	151±10	143±11	174±13
	Middle	157±19	166±23	165±21	173±20
	Bottom	209±34	222±60	211±29	203±43
$T_{D}$ (µ m)	Top	105±14	86±6	84±14	133±12
	Middle	84±12	97±5	86±9	79±4
	Bottom	93±5	118±12	70±4	61±12
$T_{B}$ / $T_{D}$	Top	1.47	1.76	1.70	1.31
	Middle	1.87	1.71	1.92	2.19
	Bottom	2.25	1.88	3.01	3.33

The thickness of the bulge region (T $_{B}$ ) and thickness of the depressed region (T $_{D}$ ) of the dried culm wall measured by a metallographic microscope. The symbol ± in table refers to the distribution range of data.