So sorry, in my September 17 post on COSC I made a silly mistake. Please let me correct it:

underneath the correct values, in seconds/day:
a) (values) for diameter UNDER OR EQUAL to 20 mm,
b) values for diameter OVER 20 mm (you were aware of ):

Average daily rate: (-5 +8) -4+6
Mean variation in rates: (3.4) 2
Greatest variation in rates: (7) 5
Difference between rates in H & V positions: (-8 +10) -6+8
Largest variation in rates: (15) 10
Thermal variation: (+-0.7) +-0.6
Rate resumption: (+-6) +-5

which makes more sense now.

Best regards
Claude Girardin