condition mean min max 4 h after light 9.322856666666667 9.203660000000001 9.39992 8 h after light 9.174563333333333 8.96529 9.38758 12 h after light 9.291826666666665 8.935319999999999 9.558119999999999 4 h after dark 9.664553333333334 9.45016 9.81565 8 h after dark 10.0083 9.740110000000001 10.26803 12 h after dark 10.22218 10.0237 10.3797