ALT19 Index calculating
7 constant coins included:
Litecoin - 20%
Namecoin - 12%
Novacoin - 7%
Terracoin - 7 %
Peercoin - 7 %
Feathercoin - 7 %
Primecoin - 7 %
+ 12 variable coins (Worldcoin, Quark, Doge, Digital... a composition is changeable but it's weighted to match previous index values when there is any change)
Calculating is in BTC. First value is 100.