The T5, T8, T12 and T-LED all posted a year-over-year decrease for 1Q 2021 shipments, compared to 1Q 2020, of 11.2 percent, 28.8 percent, 30.0 percent and 15.3 percent, respectively. The index also showed a quarter-over-quarter decline for T12, and T-LED shipments posting decreases of 27.3 percent and 24.9 percent, respectively in 1Q 2021 compared to 4Q 2020. T5 and T8 shipments posted an increase for the same quarter-over-quarter comparison of 14.5 percent and 3.1 percent, respectively

 In 1Q 2021 T-LEDs accounted for 31.3 percent of the florescent lamp shipments.  T8 lamps accounted for 52.0 percent of 1Q 2021 shipments while T5 and T12 lamps claimed the remaining 8.2 and 8.5 percent of the market, respectively.