Yahoo Mahjong Scoring System:
... Courtesy of cjyzheng
Total number of points per hand= Yahoo tile points X 4

Mixed chows and pongs – mixed suits ie KFC
22 to 30 Yahoo Tile Points
= 90 to 120 points
* Table limit is at least above 50 with no flowers.

Basic hand 1 melded pung

Note that a pair of dragons stops the all chow hand

Concealed pung few more points

Ponged honors or prevailing or seat winds result in a few more points.

*  Ponged terminals usually result in more points.