The strength and weakness of the chart and of the grahas - a varga of vitality, read for the general condition of a planet rather than for one house; also used for finer work on the nakshatras.
Meaning
D27 divides each sign into twenty-seven parts of one degree six minutes forty seconds. It is the varga of strength, used to say whether a graha is fundamentally sound or not, and it is the finest of the vargas that precede the trimshamsha in the classical order.