Have spent the past few hours trying to make sense of 12-05 and 12-08. IF the annotations are correct then there was an up-down-up traverse sequence which began at 10:45 AM on 12-05 and ended with a channel FTT last PM at 15:40. In truth I don't like the 'construction' of the first up traverse but am compelled to 'fit it' because of the following pair of traverses. Any and all input welcome. Nice work bi9. lj