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The x axis displays the wavelength in micrometers from 0.4 to 0.7 and the y axis displays the energy in arbitrary units from 0 to 100 with an increment of 25 units. The different types of curves displayed in the graph are as follow: Noon sunlight, incandescent tungsten, white LED with phosphor, and fluorescent mercury. The curve for noon sunlight rises from (0, 45) to (0.55, 90) and falls to (0.7, 65). The curve for incandescent tungsten steeply rises from (0, 10) to (0.68, 100) and falls to (0.7, 80). The curve for white LED rises from (0, 0) to (0.45, 100) and falls to (0.5, 20), again rises to (0.55, 30) and falls to (0.7, 5). The curve for fluorescent mercury rises from (0, 1) to (0.4, 51), falls to (0.42, 12) rises to (0.44, 100), again falls and rises 2 times and finally reaches (0.7, 0).

All values are estimated.