Australian Standards for C170 viscosity is min 140 - max 200For...

Australian Standards for C170 viscosity is min 140 - max 200

For the test at 400c @ 9MPa they achieved 139. (Blue pen) the maximum pressure (>10MPa) at this same temp achieved 426....
There's clearly a correlation between the right amount of pressure to the desired viscosity levels.
I'm obviously guessing this but even simply squeezing it at 9.2MPa would achieve it....

the 425c tests, hit 221 at 9MPa (Red pen) so this is simply the case of dropping the pressure slightly....

Pretty clearly demonstrated the appropriate viscosity for C170 can be achievable. They didn't achieve it in this batch as they used preset pressures, 5MPa, 9MPa and then a max of 10MPa+. Now they know the ranges and where to dial it in and at what temperatures.