Quadrants ( Kendras ) are 1,4,7, 10 houses.
Panaparas – These are the signs next to quadrants, viz, 2,5,8 & 11.
Apoklimas – These are houses next to the Panaparas, 3,6,9 & 12
Quadrant strength is calculated by the rule that a planet in a Quadrant gets 60 Viroopas or Shashtiamsas, in a Panapara 30 Shastiamsas and in an Apoklima 15 Shashtiamsas.