Barry Salter wrote:

New timetable gives the following departures from Palmers Green:

0535 (to Kings Cross), 0605 (to Moorgate), 0635, 0658, 0709, 0718, 0728,
0737, 0745, 0753, 0802, 0815, 0823, 0828, 0845, 0903, 0908, 0920, 0938
and then it settles down to the off-peak pattern of xx55, xx15 and xx35.

I haven't seen that timetable before. I see a big gap 8:02 to 8:15 and
8:28 to 8:45. I'll also have to check if any of these skip Bowes Park.