UVB Output of Various Bulbs
(microwatts/cm²)

Light spectrum

Bulb	UVB	UVA	Distance From Bulb *recommended distance
T-Rex Active UVHeat Currently not in production
SB 100-WATT FLOOD LAMP			1'*
SB 100-WATT FLOOD LAMP			20"
SB 160-WATT FLOOD LAMP			18"*
SB 160-WATT FLOOD LAMP			2'
MEGA-RAY MERCURY VAPOR LAMPS Currently not in production
60 watt (does not produce heat)			1'*
60 watt (does not produce heat)			4'
SB 100-WATT FLOOD LAMP			1'*
SB 100-WATT FLOOD LAMP			20"
SB 160-WATT FLOOD LAMP			18"*
SB 160-WATT FLOOD LAMP			2'
Zoo Meds Powersun UVHeat
100 w (new style 2010)	110	400	1' *
160w	100	480	1.5' *
ExoTerra SolarGlo
125 w	0-20		1' *
160w	0-20		1.5' *

ESU Super UV Coil Lamp
13 watt	3	14
20 watt	3	14
SunSeeker
160 watt flood	2		6"
160 watt flood	0		12"
Fluorescent Lights
Reptisun 10.0	90		1'
Reptisun 5.0	10	23	1'
Iguana Light 5.0	10	23	1
Reptisun 2.0	4	12	1'
Sun Seeker 8.0	3		1'
ESU Super UV Reptile Daylight Lamp	3	7
Natural Sunlight
equator	265
Illinois	256
Texas	220
South Carolina 11/22/04 @12:00pm	220 full sun
South Carolina 1/1/05 @12:30pm	112 partly cloudy
South Carolina 2/01/05 @12:30	156 full sun
South Carolina 09/06/08 @2:00	261 full sun
South Carolina 09/06/08 @2:00	61 full shade
UK	50
Southern California 10/02/08 @10:30 AM	177 sunny
Southern California 10/02/08 @ 12:30 PM	146 cloudy
Southern California 10/02/08 @ 2:30 PM	221 sunny
Southern California 10/02/08 @ 4:00 PM	103 sunny