Approach Charts

[Boyington]

Can someone please explain what is the 45m and 60 m highlighted in the chart.
Thanks

[pattern_is_full]

See labels above those numbers: FULL - ALS out

ALS = Approach Lighting System

If the ALS is fully working, the required RVR or visibilty is 45m - if the ALS is not working (i.e. "out") the required visibilty/RVR has to be 1200m

Reason being - the very intense approach lights leading to the runway threshold can be seen from over a thousand meters farther away than the regular runway lights, in fog, snow, or other heavy precipitation.

[tradewind]

When required, ceilings are depicted prior to the associated visibility. Ceiling is always shown in smaller size in front of the RVR or VIS.

[Equivocal]

Thanks tradewind. I'm only an ex-controller but it had me puzzled - good to have a sensible explanation.