Slopes (m) for low altitude experiments, foE only ================================================== arcd* dlayer* m is the slope of the regression curve fitted to the scatter plot of EISCAT peak plasma frequency versus Dynasonde peak plasma frequency (foE or foF2). In the following dsnd and dyna refer to two different ways of getting foF2 from the Dynasonde soundings. Dyna was an early analysis using ui_cal MATLAB script developed at RAL. It was later superceded by the automatic analysis of the Dynasonde data using DSND software (developed by J. W. Wright and N. Zabotin) and calib_ne.m scripts by Ingemar Haggstrom. m<1 means ISR densities are less than Ionosonde densities. A magic_const of 1.0 is assumed unless otherwise stated. VHF slopes (m) for low altitude experiments =========================================== dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 29 Mar 2001 dlayer 5.71 ±2.91 1.367 30 Mar 2001 dlayer 16.44 ±0.00 1.367 02 Apr 2001 dlayer 1.73 ±0.00 1.367 11 May 2001 dlayer 0.23 ±0.01 1.367 28 May 2001 dlayer 0.28 ±0.12 1.367 07 Jun 2001 dlayer 0.23 ±0.11 1.367 08 Jun 2001 dlayer 0.22 ±0.25 1.367 09 Jun 2001 dlayer 0.21 ±0.15 1.367 10 Jun 2001 dlayer 0.52 ±0.00 1.367 11 Jun 2001 dlayer 0.19 ±0.01 1.367 12 Jun 2001 dlayer 0.22 ±0.04 1.367 13 Jun 2001 dlayer 0.28 ±0.05 1.367 14 Jun 2001 dlayer 0.36 ±0.09 1.367 15 Jun 2001 dlayer 0.30 ±0.04 1.367 16 Jun 2001 dlayer 0.28 ±0.04 1.367 17 Jun 2001 dlayer 0.29 ±0.02 1.367 19 Jun 2001 dlayer 0.28 ±0.02 1.367 20 Jun 2001 dlayer 0.28 ±0.05 1.367 22 Jun 2001 dlayer 0.27 ±0.05 1.367 23 Jun 2001 dlayer 0.24 ±0.05 1.367 24 Jun 2001 dlayer 0.27 ±0.07 1.367 25 Jun 2001 dlayer 0.27 ±0.02 1.367 25 Sep 2001 dlayer No dynasonde data(?) 05 Nov 2001 dlayer No dynasonde echoes 15 Nov 2001 dlayer 0.30 ±0.02 1.367 16 Nov 2001 dlayer 0.20 ±0.06 1.367 17 Nov 2001 dlayer 0.21 ±0.05 1.367 19 Nov 2001 dlayer 0.23 ±0.04 1.367 23 Nov 2001 dlayer No dynasonde data(?) 26 Nov 2001 dlayer 6.69 ±9.13 1.367 dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 19 Feb 2002 dlayer 0.35 ±0.10 1.367 21 Feb 2002 dlayer 0.43 ±0.10 1.367 01 Jul 2002 dlayer 0.16 ±0.13 1.367 02 Jul 2002 dlayer 0.36 ±0.02 1.367 03 Jul 2002 dlayer 0.02 ±0.01 1.367 04 Jul 2002 dlayer 0.01 ±0.00 1.367 05 Jul 2002 dlayer No dynasonde data (?) 06 Jul 2002 dlayer No dynasonde data (?) 07 Jul 2002 dlayer No dynasonde data (?) 08 Jul 2002 dlayer 0.19 ±0.04 1.367 09 Jul 2002 dlayer 0.22 ±0.03 1.367 10 Jul 2002 dlayer 0.23 ±0.02 1.367 11 Jul 2002 dlayer 0.22 ±0.02 1.367 12 Jul 2002 dlayer 0.15 ±0.04 1.367 13 Jul 2002 dlayer 0.21 ±0.03 1.367 14 Jul 2002 dlayer 0.20 ±0.01 1.367 15 Jul 2002 dlayer No dynasonde data (?) 01 Aug 2002 dlayer 0.38 ±0.10 1.367 02 Aug 2002 dlayer 0.23 ±0.06 1.367 dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 23 Jan 2003 dlayer 0.14 ±0.01 1.367 24 Jan 2003 dlayer 0.40 ±0.09 1.367 27 Jan 2003 dlayer 0.37 ±0.08 1.367 28 Jan 2003 dlayer 0.29 ±0.08 1.367 05 Mar 2003 dlayer 0.69 ±0.20 1.367 06 Mar 2003 dlayer 0.30 ±0.13 1.367 31 May 2003 arcd 0.84 ±0.10 1.367 foE hand-checked 12 Jun 2003 arcd 0.80 ±0.05 1.367 27 Jun 2003 dlayer 0.45 ±0.04 1.367 30 Jun 2003 arcd 0.59 ±0.07 01 Jul 2003 arcd 0.82 ±0.11 1.367 02 Jul 2003 arcd 1.05 ±0.18 1.367 28 Oct 2003 arcd 0.56 ±0.06 1.367 21 Nov 2003 arcd 0.51 ±0.06 1.367 foE hand-checked dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 22 Feb 2004 arcd 0.51 0.08 1.0 (suggest 1.95) 14 Jun 2004 arcd 0.79 ±0.21 1.367 15 Jun 2004 arcd 0.78 ±0.15 1.367 16 Jun 2004 arcd 0.73 ±0.30 1.367 17 Jun 2004 arcd 0.74 ±0.19 1.367 18 Jun 2004 arcd 0.77 ±0.20 1.367 30 Jun 2004 arcd 0.97 ±0.16 1.367 foE, hand-checked 02 Jul 2004 arcd 1.00 ±0.08 1.367 foE, hand-checked 05 Jul 2004 arcd 1.09 ±0.22 1.367 foE, hand-checked 06 Jul 2004 arcd 1.00 ±0.17 1.367 foE, hand-checked 07 Jul 2004 arcd 1.15 ±0.21 1.367 foE, not fEs, hand-checked 08 Jul 2004 arcd 1.04 ±0.15 1.367 foE, not fEs, hand-checked 10 Jul 2004 arcd 0.98 ±0.16 1.367 foE, not fEs, hand-checked 11 Jul 2004 arcd 0.93 ±0.18 1.367 foE, not fEs, hand-checked 12 Jul 2004 arcd 0.95 ±0.18 1.367 foE, not fEs, hand-checked 13 Jul 2004 arcd 1.07 ±0.12 1.367 foE, not fEs, hand-checked 14 Jul 2004 arcd 0.92 ±0.08 1.367 foE, hand-checked 15 Jul 2004 arcd 0.90 ±0.11 1.367 foE, hand-checked 29 Oct 2004 arcd 0.69 ±0.15 1.367 01 Nov 2004 arcd 0.30 ±0.03 1.367 09 Nov 2004 arcd 0.65 ±0.12 1.367 10 Nov 2004 arcd 0.57 ±0.41 1.367 11 Nov 2004 arcd 0.61 ±0.24 1.367 12 Nov 2004 arcd 0.55 ±0.27 1.367 13 Nov 2004 arcd 0.62 ±0.13 1.367 11 Dec 2004 arcd 0.50 ±0.18 1.367 dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 10 Jan 2005 arcd 0.51 ±0.05 1.367 12 Jan 2005 arcd 0.84 ±0.22 1.367 13 Jan 2005 arcd 0.73 ±0.17 1.367 14 Jan 2005 arcd 0.70 ±0.08 1.367 17 Jan 2005 arcd Absorption 1.367 18 Jan 2005 arcd Absorption 1.367 21 Jan 2005 arcd Absorption 1.367 01 Jun 2005 arcd 0.81 ±0.14 1.367 01 Jul 2005 arcd 0.74 ±0.18 1.367 foE, not fEs, hand-checked 02 Jul 2005 arcd 0.77 ±0.10 1.367 foE, not fEs, hand-checked 04 Jul 2005 arcd 0.83 ±0.10 1.367 foE, not fEs, hand-checked 05 Jul 2005 arcd 0.92 ±0.07 1.367 foE, not fEs, hand-checked 06 Jul 2005 arcd 1.04 ±0.20 1.367 foE, not fEs, hand-checked 07 Jul 2005 arcd 0.84 ±0.08 1.367 foE, not fEs, hand-checked 08 Jul 2005 arcd 0.85 ±0.07 1.367 foE, not fEs, hand-checked 09 Jul 2005 arcd 1.03 ±0.31 1.367 foE, not fEs, hand-checked 10 Jul 2005 arcd 0.83 ±0.03 1.367 foE, not fEs, hand-checked 09 Oct 2005 arcd 1.05 ±0.32 1.367 foE, not fEs, hand-checked 10 Oct 2005 arcd 1.23 ±0.77 1.367 foE, not fEs, hand-checked 24 Nov 2005 arcd 0.83 ±0.22 1.367 25 Nov 2005 arcd 1.02 ±0.61 1.367 dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 30 Jun 2006 arcd 0.85 ±0.15 1.367 01 Jul 2006 arcd 1.01 ±0.07 1.367 foE, not fEs, hand-checked 02 Jul 2006 arcd 1.00 ±0.09 1.367 foE, not fEs, hand-checked 03 Jul 2006 arcd 0.97 ±0.06 1.367 foE, not fEs, hand-checked 04 Jul 2006 arcd 0.97 ±0.05 1.367 foE, not fEs, hand-checked 05 Jul 2006 arcd 0.87 ±0.06 1.367 foE, not fEs, hand-checked 06 Jul 2006 arcd 1.26 ±0.16 1.367 foE, not fEs, hand-checked 28 Jul 2006 arcd 1.12 ±0.21 1.367 foE, not fEs, hand-checked 29 Jul 2006 arcd 1.35 ±0.44 1.367 foE, not fEs, hand-checked 03 Aug 2006 arcd 0.98 ±0.38 1.367 foE, not fEs, hand-checked 04 Aug 2006 arcd 0.85 ±0.34 1.367 foE, not fEs, hand-checked 12 Aug 2006 arcd 0.94 ±0.11 1.367 foE, not fEs, hand-checked 13 Aug 2006 arcd 1.09 ±0.18 1.367 foE, not fEs, hand-checked 06 Sep 2006 arcd 0.68 ±0.1 1.367 foE, auroralE hand-checked 07 Sep 2006 arcd 0.76 ±0.09 1.367 foE, not fEs, hand-checked 08 Sep 2006 arcd 0.83 ±0.09 1.367 foE, not fEs, hand-checked 09 Sep 2006 arcd 0.78 ±0.07 1.367 foE hand-checked 24 Oct 2006 arcd 1.03 ±0.32 1.367 foE, not fEs, hand-checked 23 Nov 2006 arcd 0.68 ±0.24 1.367 24 Nov 2006 arcd 0.97 ±0.12 1.367 27 Nov 2006 arcd 0.57 ±0.18 1.367 28 Nov 2006 arcd 1.25 ±0.49 1.367 dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 21 Jun 2007 arcd 1.30 ±0.04 1.367 foE hand-checked (suggest 1.06) 22 Jun 2007 arcd 1.07 ±0.05 1.367 foE hand-checked 25 Jun 2007 arcd 1.43 ±0.09 1.367 foE hand-checked (suggest 0.95) 26 Jun 2007 arcd 1.46 ±0.10 1.367 foE hand-checked (suggest 0.93) 28 Jun 2007 arcd 1.44 ±0.18 1.367 foE hand-checked (suggest 0.95) 10 Jul 2007 arcd 1.01 ±0.21 1.0 foE hand-checked (suggest 1.35) 12 Jul 2007 arcd 1.08 ±0.46 1.367 foE (suggest 1.27) 13 Jul 2007 arcd 1.51 ±0.42 1.367 foE (suggest 0.90) 16 Jul 2007 arcd 1.51 ±0.28 1.367 foE, hand-checked (suggest 0.90) 17 Jul 2007 arcd 0.96 ±0.38 1.367 foE, (suggest 1.42) 18 Jul 2007 arcd 0.76 ±0.15 1.367 foE, (suggest 1.80) 19 Jul 2007 arcd 1.06 ±0.14 1.367 foE, (suggest 1.29) 01 Aug 2007 arcd 0.46 ±0.19 1.367 foE (suggest 3.00) 02 Aug 2007 arcd 1.05 ±0.36 1.367 foE (suggest 1.30) 03 Aug 2007 arcd 0.89 ±0.19 1.367 foE (suggest 1.53) 04 Aug 2007 arcd 0.64 ±0.18 1.367 foE (suggest 2.14) 05 Aug 2007 arcd 0.64 ±0.31 1.367 foE (suggest 2.12) 06 Aug 2007 arcd 1.05 ±0.18 1.367 foE (suggest 1.30) 07 Aug 2007 arcd 1.12 ±0.45 1.367 foE (suggest 1.22) 08 Aug 2007 arcd 1.06 ±0.16 1.367 foE (suggest 1.29) 09 Aug 2007 arcd 1.12 ±0.23 1.367 foE (suggest 1.23) 10 Aug 2007 arcd 1.64 ±0.18 1.367 foE (suggest 0.83) 11 Aug 2007 arcd 1.02 ±0.17 1.367 foE (suggest 1.34) 12 Aug 2007 arcd 1.29 ±0.24 1.367 foE (suggest 1.06) 13 Aug 2007 arcd 1.64 ±0.13 1.367 foE (suggest 0.83) 14 Aug 2007 arcd 1.15 ±0.08 1.367 foE hand-checked (suggest 1.19) 05 Dec 2007 arcd 0.64 ±0.25 1.00 foE (suggest 1.56) 11 Dec 2007 arcd 0.85 ±0.30 1.00 foE (suggest 1.18) 12 Dec 2007 arcd 0.77 ±0.24 1.00 foE (suggest 1.30) 13 Dec 2007 arcd 0.78 ±0.19 1.00 foE (suggest 1.29) dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 29 Jan 2008 arcd 0.75 ±0.15 1.0 foE 30 Jan 2008 arcd 0.71 ±0.29 1.0 foE 31 Jan 2008 arcd 0.79 ±0.43 1.0 foE 01 Feb 2008 arcd 1.05 ±0.79 1.0 foE (suggest 0.95) 02 Feb 2008 arcd 0.82 ±0.30 1.0 foE (suggest 1.23) 03 Feb 2008 arcd 0.85 ±0.22 1.0 foE (suggest 1.18) 05 Feb 2008 arcd 0.78 ±0.22 1.0 foE (suggest 1.28) 06 Feb 2008 arcd 0.88 ±0.12 1.0 foE (suggest 1.14) 07 Feb 2008 arcd 1.27 ±0.59 1.0 foE (suggest 0.79) 08 Feb 2008 arcd 0.86 ±0.23 1.0 foE (suggest 1.16) 09 Mar 2008 arcd 0.91 ±0.79 1.0 foE (suggest 1.10) 12 Dec 2008 manda 0.73 ±0.13 1.0 foE dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 12 Mar 2009 arcd 0.92 ±0.29 1.0 foE (suggest 1.09) 11 Jun 2009 arcd 1.13 ±0.10 1.0 foE (suggest 0.89) 12 Jun 2009 arcd 1.24 ±0.45 1.0 foE (suggest 0.81) 20 Jul 2009 arcd 1.09 ±0.08 1.0 foE (suggest 0.92) 09 Dec 2009 arcd 0.95 ±0.74 1.0 foE (suggest 1.05) 13 Dec 2009 arcd . ± . 1.0 foE (suggest . ) 14 Dec 2009 arcd 1.10 ±0.56 1.0 foE (suggest 0.91) 15 Dec 2009 arcd 1.05 ±0.77 1.0 foE (suggest 0.95) 16 Dec 2009 arcd 0.75 ±0.39 1.0 foE (suggest 1.32) 17 Dec 2009 arcd 0.83 ±0.57 1.0 foE (suggest 1.20) dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 02 Dec 2010 arcd 0.87 ±0.09 1.0 foE (suggest 1.15) 03 Dec 2010 arcd 0.52 ±0.84 1.0 foE (suggest 1.93) 05 Dec 2010 arcd 0.73 ±0.13 1.0 foE (suggest 1.38) 06 Dec 2010 arcd 0.69 ±0.26 1.0 foE (suggest 1.44) 10 Dec 2010 arcd 0.71 ±0.15 1.0 foE (suggest 1.40) 12 Dec 2010 arcd 0.40 ±0.61 1.0 foE (suggest 0.71) 13 Dec 2010 arcd 1.08 ±0.10 1.0 foE (suggest 0.93) 14 Dec 2010 arcd 0.54 ±0.13 1.0 foE (suggest 1.84) 16 Dec 2010 arcd 0.78 ±0.23 1.0 foE (suggest 1.28) 17 Dec 2010 arcd 0.73 ±0.09 1.0 foE (suggest 1.37) 18 Dec 2010 arcd 0.58 ±0.01 1.0 foE (suggest 1.73) dsnd analysis date modulation calib_ne(foE) magic_const VHF m +/- error ------------------------------------------------------ 20 Jun 2013 arcd 1.06 ±0.1 1.0 foE (suggest 0.94) 24 Jun 2013 arcd 0.75 ±0.2 1.0 foE (suggest 1.34) 25 Jun 2013 arcd 0.96 ±0.22 1.0 foE (suggest 1.04) 27 Jun 2013 arcd 0.89 ±0.34 1.0 foE (suggest 1.12) 01 Jul 2013 arcd 0.87 ±0.12 1.0 foE (suggest 1.14) 03 Jul 2013 arcd 1.05 ±0.12 1.0 foE (suggest 0.95) 04 Jul 2013 arcd 1.20 ±0.09 1.0 foE (suggest 0.84)