Patch Occurrence List (inferred from Polar Camera quick-look plots) Date Time Span Comments ========= ========= ======== 03-Nov-93 2300-2400 continues on the 4th 04-Nov-93 0000-1400 Moon; interrupted by twilight 07-Nov-93 2100-2400 continues on the 8th 08-Nov-93 0000-0600 moon after 0400 13-Nov-93 2000-2400 continues on the 14th 14-Nov-93 0000-0700 intermittent patchy cloud 15-Nov-93 2000-2400 continues on the 16th 16-Nov-93 0000-1530 low-amplitude 1930-2400 ! >250R in zenith, continues on the 17th 17-Nov-93 0000-0800 ! 100R in zenith 1930-2300 ! 250R in zenith 19-Nov-93 0000-0700 ! decaying from 200R in zenith 1900-2400 large patches widely separated? 20-Nov-93 0000-1000 weak emission, large gaps 21-Nov-93 0000-1300 weak emission, slowly varying (??) 02-Dec-93 2100-2400 ! >500R in zenith!, continues on the 3rd 03-Dec-93 0000-0700 ! gradually fades out; moon, interm. cloud 07-Dec-93 2200-2400 ! continues on the 8th 08-Dec-93 0000-1500 ! classical patch signature - beautiful 1700-2100 ! continues with higher bkgd, lower modulation 10-Dec-93 1400-2200 ! 200R in zenith at 1950 UT 17-Dec-93 1700-2130 a few discrete patches 18-Dec-93 0000-0830 faint patches widely separated (?) 31-Dec-93 0000-2400 Moon but little cloud; may be real 15-Jan-94 1800-2400 ! just after aurora at 1600; 300R in zenith 17-Jan-94 0100-1100 150R or less; aurora at 1130 18-Jan-94 1500-1800 150R patches on top of noon enhancement 19-Jan-94 0100-1900 low amplitude 21-Jan-94 1900-2400 ! 150R amplitude above moon and noon; cont'd 22-Jan-94 0000-0400 ! amplitude decays; intermittent thin cloud 02-Feb-94 0700-1400 isolated patches, reaching 150R by 1100 16-Feb-94 0000-0700 ! up to 250R above moon 19-Feb-94 0200-0900 100R amplitude 20-Feb-94 0100-1000 up to 150R above moon ======================================================================== 29-Oct-94 0900-1300 <100R above moon 01-Nov-94 2200-2400 ! >150R; continued... 02-Nov-94 0000-1200? ! <100R; end time uncertain 10-Nov-94 0230-0700 <100R; thin overcast; SA forms drift dusk->dawn? 26-Nov-94 0700-1500? 50R patches apparently coexisting with aurora? 29-Nov-94 2100-2400 50R patches immed. after aurora 05-Jan-95 1600-2300 100R patches (+ aurora?) 06-Jan-95 1200-1500 50R isolated patches 1900-2400 up to 150R patches, continued... 07-Jan-95 0000-0100 weak patches 11-Jan-95 0100-0800 weak (~50R) dense patches 13-Jan-95 2000-2200 100R patches, intermittent cloud 17-Jan-95 2000-2400 ! >100R patches; continued... 18-Jan-95 0000-0800 ! 50-100R patches above moon 19-Jan-95 2300-2400 50R patch 20-Jan-95 1900-2400 up to 100R patches, continued... 21-Jan-95 0000-0500 50R patches 22-Jan-95 1300-2400 50-100R patches, data gap 1700-1900 23-Jan-95 0000-0300 50R patches 2200-2400 <50R patches, continued... 24-Jan-95 0000-0700 very weak patches(?) 30-Jan-95 0000-0400 >50R patches 2100-2300 ! 1-2 large patches ~100R 31-Jan-95 0000-1200 ! up to 100R patches 2100-2300 50-100R patches 01-Feb-95 0200-0800 up to 50R patches 02-Feb-95 0400-0700 up to 50R patches 2200-2400 ! >50R patches, continued... 03-Feb-95 0000-1200 ! 50-100R patches 2200-2400 50R patches, continued... 04-Feb-95 0000-0400 up to 100R patches 07-Feb-95 2300-2400 ! 50R patches, continued... 08-Feb-95 0000-1300 ! up to 150R above moon and thin cloud 13-Feb-95 2300-2400 50R, continued... 14-Feb-95 0000-0400 up to 150R; moon, thin cloud ======================================================================== 17-Oct-95 0100-1000 50R above moon; little or no cloud 19-Oct-95 0000-1000 50-100R above moon; intermittent thin cloud 22-Oct-95 0400-1100 up to 50R 29-Oct-95 0900-1200 up to 50R 01-Nov-95 0300-0800 up to 50R 02-Nov-95 0200-1300 ! up to 100R 17-Nov-95 2200-2400 50R 22-Nov-95 1100-2400 ! intervals of patches, up to 50R 23-Nov-95 0000-0200 20R(!?) patches 01-Dec-95 1200-2400 ! up to 100R above moon; continued... 02-Dec-95 0000-0200 weak patches 1200-2100 ! continuous low modulation 15-Dec-95 0600-2400 ! weak at first, up to 50R after 1600 18-Dec-95 1200-2400 weak throughout; data gap 1800-2100 ======================================================================== 04-Dec-1996 1500-2400 50-100R at first, decaying to ~0 by 2400 10-Dec-1996 0000-0400 <50R, decaying to ~0