In my experience of collecting fluorescent lamps from Japan, one of the things that l found particularly interesting is that many Japanese residential triphosphor fluorescent lamps have color temperatures that often deviate from standard triphosphor color temperatures.

For example, I often see 5200K or 5500K triphosphor fluorescent lamps meant to replace 5000K triphosphor fluorescent lamps in residential applications like the National/Panasonic FCL30ENW/28 circline lamps meant to replace FCL30EX-N/28 circline lamps and 7200K or 7400K triphosphor fluorescent lamps meant to replace 6700K triphosphor fluorescent lamps in residential applications like the National/Panasonic FCL30ECW/28 circline lamps meant to replace FCL30EX-D/28 circline lamps.

I wonder why Japan had specifically marketed residential application fluorescent lamps that had such modifications made to their color temperatures instead of sticking solely to standard color temperatures like 3000K, 5000K, or 6700K.