OK now we have a TAF valid for 30hrs. Yet we still only have 4 temp groups and 4 QNH groups so is each group now divided into 7.5 hrs but the actual figure represents the mid point of the period of 3:45 into the period Or is that bit still for the first 12hrs of the 30hr period and having the actual figure as the midpoint 1:30 into the the period.... why they change this stuff is beyond me?
