During last weekend (Sunday 4th May -08) at city of Espoo, I observed seasons first rainbow. Local thunderstorm came along with rainshowers produring primary and secondary bows. I visually saw 3 primary supernumeraries.
In the heavily enhanced image (USM) of primary bow there is small hint of 4th supernumerary visible (1). Outside of seconday bow (2) there is larger arc (dark pink color), assuming it indicates supernumerary also... The droplet sizes may been quite even, due to easily visible interference bows.