Fluorescent Tubes   
Compact Fluorescent

Fluorescent Guide
Lumens= Light Level  
CRI (color rendering index)= Light Quality       100 CRI = perfect color representation   
Color temperature:
  
27K  (2700 Kelvin temperature)  =  Warm White, orangey pinkish white  
35K (3500 Kelvin temperature)  = Neutral or off white  
41K (4100 Kelvin temperature) =  Cool White,  the most commonly used color  
50K (5000 Kelvin temperature) = Daylight, blueish white like the noon sky