On 11 Feb, 09:16, Ian wrote:
0850z Calm, 100m, FZFG, OBSC, -1.5/-1.9, 1034.4 (R)

09-09z Tx +13.0, Tn -2.3, Tg -5.9, rain Tr (x)

RMK: Fog formed sometime after 0530z. Moderate hoar,
slight rime on trees and shrubs. Ground surface frozen.
Visibility increased to 200m with disc of sun visible at
times as I write at 0915z.

1700z ESE F1-2, 5km, BR, 4Ci, +7.1/+4.5, 1032.8 (=)

RMK: Fog slow to clear this morning, increasingly shallow,
but visibility not above 1000m until 1115z. Sunny afternoon,
visibility briefly up to 10km 14z-15z. Day max +10.5C.
Distinctly misty, 3500m as I write at 1725z

Ian,

Raunds, East Northants. 63m amsl. NGR SP9972.