These are NOT exhaustive lists -- they are just a few of the strongest lines visible to human eyes. The units of wavelength are nanometers. The "strength" values are just rough guidelines to suggest which lines might be the strongest within each element. They certainly do NOT indicate relative strengths from one element to the next.
Element Wavelength Strength
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Hydrogen 410 15
434 30
486 80
656 300
Helium 397 20
403 55
412 14
447 200
502 100
588 600
668 100
707 200
Mercury 405 1800
436 2000
546 1100
577 1240
579 1380
Neon 439 200
585 500
598 120
616 120
618 250
622 150
627 150
638 120
640 200
651 150
660 150
Oxygen 407 735
419 735
533 485
544 335
596 350
605 470
616 1340
645 1080
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