condition mean min max 4 h after light 3757.024407 3748.647487 3765.401327 8 h after light 4483.7119285 3773.386877 5194.03698 12 h after light 4487.048251 4202.864445 4771.232057 4 h after dark 4646.253891 4201.431595 5091.076187 8 h after dark 4883.9940105 4069.38708 5698.600941 12 h after dark 3141.606434 3141.606434 3141.606434