As of 1999. GISS showed no net warming from the 1870s through the 1970s, and that 1877 was the warmest year during that century.
That was right around the time when Mikey was building his hockey stick.
But the GISS data didn’t look much like a hockey stick, so Hansen simply got rid of all the warm pre-1880 years, and cooled all the remaining pre-1960 years. The image below shows what the original hockey stick would have looked like had Hansen not hacked the GISS database.
This is of course on top of all of his pre-1999 hacking, to cool the past from his 1981 version.
Scientists say they are 99% certain, based on this meaningless tortured data which wouldn’t withstand the slightest scrutiny by any serious engineering group in the country. And this doesn’t even address the other issue of Mikey throwing out the post-1960 tree ring data.