(b). The second one is called Saptavargaja Bala. To calculate this we will have to look at the following seven divisional charts: Rasi, Hora, Drekkana, Saptamsa, Navamsa, Dwadasamsa and Trimsamsa. In all these charts we look at what kind of sign a certain planet is located. If a planet occupies in the rashi chart its Moolatrikona sign it gets 45 Shashtiamsas (this is a special rule for the rashi chart only), if it is in its own sign (of whatever varga or division) it gets 30 Shashtiamsas, in the sign of a great friend 22.5 Shashtiamsas, in the sign of a friend 15 Shashtiamsas, in a neutral sign 7.5 Shashtiamsas, in the sign of an enemy 3.75 Shashtiamsas and in the sign of a great enemy 1.875 Shashtiamsas. The concept of friends and enemies is taken from the basic vedic astrological system. This is one of the most important parts of Shadbala because Saptavargaja( Seven Types of Divisional details) bala can give a lot of Shashtiamsas.
(c). Ojayyugma Bala The idea behind this concept is that a planet gains strength because it is in an even or odd sign or navamsa. The Moon and Venus get 15 Shashtiamsas when they are in an even sign. These planets also get 15 Shastiamsas when they are in an even navamsa. In totality the Moon or Venus may gain 30 Shashtiamsas if they are located in an even sign AND even navamsa. The reason behind this is that the Moon and Venus are female planets and are strong when they are in female (even) signs or navamsas. Sun, Mars, Jupiter, Mercury and Saturn get 15 Shastiamsas when they are in an odd sign. They also can get 15 Shashtiamsas when they are in an odd navamsa. These planets are male or neutral and are strong in male (odd) signs.
(d). Kendra Bala A planet in a kendra house (1,4,7 and 10) gets 60 Shashtiamsas, a planet in the house 2,5,8 or 11 gets 30 Shashtiamsas, a planet in the house 3,6,9 or 12 gets 15 Shashtiamsas. The reasoning is that planets in Kendra houses can easily express themselves and are therefore strong.
(e) Drekkena Bala (Drekkana means third divisional part) To calculate this the planets are divided into masculine planets (Sun, Jupiter and Mars), neutral planets (Saturn and Mercury) and female planets (Venus and the Moon). If a male planet is in the first drekkana (0-10 degrees) of whatever sign it gets 15 Shashtiamsas. If a neutral planet is in the middle drekkana of whatever sign (that means it is located between 10-20 degrees of whatever sign) it gets 15 Shashtiamsas. If a female planet is located in the last drekkana (the last 10 degrees) of whatever sign it gets 15 Shashtiamsas. The reasoning is that the first drekkana of each sign is good for male planets, the middle drekkana for neutral planets and the last drekkana for female planets. Now we have to add up all the Shashtiamsa values. The result is the total Sthana Bala. You are in the priviliged position that you do not have to calculate all this by hand. You can see it on the computer printout. When you know what the different strengths and weaknesses mean you can easily assess the strengths and weaknesses of your chart just by looking at the Shadbala printout.