bad_image_groups[0] = new Image_group("1998.03.04_00", "1998.03.04_12");
bad_image_groups[1] = new Image_group("1998.06.24_12", "1999.02.03_12");
bad_image_groups[2] = new Image_group("1999.02.15_00", "1999.02.18_00");
bad_image_groups[3] = new Image_group("1999.11.17_00", "1999.11.19_00");
bad_image_groups[4] = new Image_group("1999.11.29_00", "1999.12.01_00");
bad_image_groups[5] = new Image_group("1999.12.02_00", "1999.12.03_00");
bad_image_groups[6] = new Image_group("2001.07.29_00", "2001.07.30_00");
bad_image_groups[7] = new Image_group("2001.09.19_12", "2001.09.19_12");
bad_image_groups[8] = new Image_group("2002.02.06_00", "2002.02.13_00");
bad_image_groups[9] = new Image_group("2002.03.30_12", "2002.03.30_12");
bad_image_groups[10] = new Image_group("2002.04.02_00", "2002.04.02_00");
bad_image_groups[11] = new Image_group("2002.04.04_12", "2002.04.04_12");
bad_image_groups[12] = new Image_group("2002.04.29_00", "2002.04.29_00");
bad_image_groups[13] = new Image_group("2002.09.25_00", "2002.09.25_12");
bad_image_groups[14] = new Image_group("2002.09.26_12", "2002.09.27_00");
bad_image_groups[15] = new Image_group("2002.10.09_12", "2002.10.10_12");
bad_image_groups[16] = new Image_group("2002.10.31_12", "2002.10.31_12");
bad_image_groups[17] = new Image_group("2002.11.05_00", "2002.11.05_00");
bad_image_groups[18] = new Image_group("2002.11.17_00", "2002.11.17_00");
bad_image_groups[19] = new Image_group("2002.12.07_12", "2002.12.07_12");
bad_image_groups[20] = new Image_group("2002.12.25_00", "2002.12.25_00");
bad_image_groups[21] = new Image_group("2003.01.14_00", "2003.01.15_00");
bad_image_groups[22] = new Image_group("2003.01.16_12", "2003.01.18_00");
bad_image_groups[23] = new Image_group("2003.01.20_12", "2003.01.21_00");
bad_image_groups[24] = new Image_group("2003.01.23_00", "2003.01.23_12");
bad_image_groups[25] = new Image_group("2003.03.24_12", "2003.03.25_12");
bad_image_groups[26] = new Image_group("2003.08.31_00", "2003.08.31_00");
bad_image_groups[27] = new Image_group("2004.04.23_00", "2004.04.26_00");
bad_image_groups[28] = new Image_group("2004.10.20_00", "2004.10.20_00");
bad_image_groups[29] = new Image_group("2004.12.10_12", "2004.12.10_12");
bad_image_groups[30] = new Image_group("2005.05.07_12", "2005.05.07_12");
bad_image_groups[31] = new Image_group("2007.01.27_12", "2007.02.01_12");
bad_image_groups[32] = new Image_group("2007.06.13_12", "2007.06.13_12");
bad_image_groups[33] = new Image_group("2007.06.27_12", "2007.06.27_12");
bad_image_groups[34] = new Image_group("2007.07.26_00", "2007.07.26_00");
bad_image_groups[35] = new Image_group("2007.08.22_12", "2007.08.22_12");
bad_image_groups[36] = new Image_group("2007.09.03_12", "2007.09.05_12");
bad_image_groups[37] = new Image_group("2009.06.05_12", "2009.06.07_12");
bad_image_groups[38] = new Image_group("2009.07.13_00", "2009.07.13_00");
bad_image_groups[39] = new Image_group("2009.07.29_12", "2009.08.06_12");
bad_image_groups[40] = new Image_group("2009.11.21_12", "2009.11.21_12");
bad_image_groups[41] = new Image_group("2009.11.22_12", "2009.11.22_12");
n_gaps = 42;