Table:
Some representative refractive indices

Material
λ (nm)
n
Ref.

Vacuum

1 (by definition)

Air at STP

1.000277

Gases at 0 °C and 1 atm

Air
589.29
1.000293
[1]

Carbon dioxide
589.29
1.00045
[2]

[3]
[4]

Helium
589.29
1.000036
[1]

Hydrogen
589.29
1.000132
[1]

Liquids at 20 °C

Arsenic trisulfide and sulfur in methylene iodide

1.9
[5]

Benzene
589.29
1.501
[1]

Carbon disulfide
589.29
1.628
[1]

Carbon tetrachloride
589.29
1.461
[1]

Ethyl alcohol (ethanol)
589.29
1.361
[1]

Silicone oil

1.336-1.582
[6]

Water
589.29
1.3330
[1]

10% Glucose solution in water
589.29
1.3477
[7]

20% Glucose solution in water
589.29
1.3635
[7]

60% Glucose solution in water
589.29
1.4394
[7]

Solids at room temperature

Titanium dioxide (Rutile phase )
589.29
2.496
[8]

Diamond
589.29
2.419
[1]

Strontium titanate
589.29
2.41

Amber
589.29
1.55
[1]

Fused silica (also called Fused Quartz)
589.29
1.458
[1]

Sodium chloride
589.29
1.544
[9]

Other materials

Liquid helium

1.025

Water ice

1.31

Cornea (human)

1.373/1.380/1.401
[10]

Lens (human)

1.386 - 1.406

Acetone

1.36

Ethanol

1.36

Glycerol

1.4729

Bromine

1.661

Teflon AF

1.315
[11]

Teflon

1.35 - 1.38

Cytop

1.34
[12]

Sylgard 184 (Polydimethylsiloxane)

1.4118
[13]

PLA

1.46
[14]

Acrylic glass

1.490 - 1.492

Polycarbonate

1.584 - 1.586

PMMA

1.4893 - 1.4899

PETg

1.57

PET

1.5750

Crown glass (pure)

1.50 - 1.54

Flint glass (pure)

1.60 - 1.62

Crown glass (impure)

1.485 - 1.755

Flint glass (impure)

1.523 - 1.925

Pyrex (a borosilicate glass)

1.470
[15]

Cryolite

1.338

Rock salt

1.516

Sapphire

1.762–1.778

Sugar Solution, 25%

1.3723
[16]

Sugar Solution, 50%

1.4200
[16]

Sugar Solution, 75%

1.4774
[16]

Cubic zirconia

2.15 - 2.18

Potassium Niobate (KNbO3)

2.28

Silicon carbide

2.65 - 2.69

Cinnabar (Mercury sulfide)

3.02

Gallium(III) phosphide

3.5

Gallium(III) arsenide

3.927

Zinc Oxide
390
2.4

Germanium

4.01

Silicon
590
3.962
[17]

This image displays a table. Could you provide me with the row number and column number corresponding to this table? Provide the final answer in the JSON structure, using the format {"row_number": "m", "column_number": "n"}.

This table has 61 rows and 3 columns. Thus, the final answer is {"row_number": "61", "column_number": "3"}.