Mr. Allan W. Geery, Norfork Elementary School, Norfork, Arkansas, USA 36.1972ºN, 92.2688ºW, 253 m

NOTE: During a trip back from a summer conference, the pc board of RGK-512 came out of its slot. When this was discovered in September, the board was fixed and the instrument was recalibrated. I have left these data in my own files (they have been removed from GLOBE's files), but marked them as "bad data" even though they don't look unreasonable.

NOTE: This school has two sun photometers, both of which were re-calibrated in fall, 2004. Students often take two sets of measurements at nearly the same time, so the results from these two instruments can be compared.