condition mean min max 4 h after light 2.883023 2.791352 3.002401 8 h after light 2.073038 1.457941 2.445307 12 h after light 1.952026 1.4485350000000001 2.865064 16 h after light 2.9224383333333335 2.5565 3.342423 4 h after dark 2.9747703333333333 2.214972 4.0636209999999995 8 h after dark 1.9872163333333333 1.4380469999999999 2.956471