condition mean min max 4 h after light 146.78858400000001 137.695652 155.881516 8 h after light 175.2554125 173.462826 177.047999 12 h after light 168.177981 148.391257 187.964705 4 h after dark 189.89210250000002 186.013687 193.770518 8 h after dark 179.02647100000002 176.625351 181.427591 12 h after dark 167.379023 167.379023 167.379023