A study was conducted about the lifespan of the street lamps in the northern area of Metropolitan Lima. in which we considered four types of bulbs: Sodium 70W. Sodium 150W. Sodium 250W and Mercury 125W; with a shorter observation time than the theoretical cycle of 16000 hours stated by the manufacturer. https://www.ealisboa.com/great-pick-BERKLEY-POWER-WORM-7-100-PACK-super-buy/