Just in case anyone else is as crazy as me and wants to print it all out, I found that setting the print quality to fast has no noticable detriment on your ability to read the charts. The legends on the side/bottom bcome tricky to read, but to be honest you don't really need to be ble to read them anyways.
Doing that meant that my ink supply was hardly touched! (but my 500 stack of A4 paper has shrunk alot!!)
