From 8875b420a873a360a9484778b487394add318a5e Mon Sep 17 00:00:00 2001 From: wukong Date: Wed, 13 Jun 2018 21:41:39 -0700 Subject: added shebang, replaced if-elses with shortcut notation, ported online mean and variance calc to mean.awk --- sample.desc.txt | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 sample.desc.txt (limited to 'sample.desc.txt') diff --git a/sample.desc.txt b/sample.desc.txt new file mode 100644 index 0000000..d7c1c67 --- /dev/null +++ b/sample.desc.txt @@ -0,0 +1,78 @@ +File name: sample.descr.txt +Author: Paul R. gazis +Date: 7-APR-2006 + +This file contains a description of the contents of sample.bin, a +binary file of sample data for demonstration of the 'viewpoints' +analysis package, along with a brief description of how that data +can be used. This file contains a small subset of the Pioneer 10 +data set. The Pioneer 10 and 11 spacecraft, launched in 1972 and +1973, respectively, were the first spacecraft to encounter +Jupiter and Saturn, and in 1983, Pioneer 10 became the first +man-made object to leave the solar system. The full data Pioneer +data set is available from the National Space Science Data Center +(NSSDC) + +http://nssdc.gsfc.nasa.gov/ + +from their FTP site at + +ftp://nssdcftp.gsfc.nasa.gov/spacecraft_data/ + +These data consist of a set of times, trajectory information, and +hourly averaged solar wind speed, density, temperatures, and flow +angles described below. They encompass the range of helioncentric +distances between 1 and 17 AU when Pioneer 10 began to observe +quasi-periodic co-rotating inbteraction regions associated with +the interaction of low- and high-speed streams in the solar wind. +Within these regions, solar wind speed is moderate (of the order +400-500 km/s) while solar wind densoty and temperature are +elevated. This is readily apparent if one compares scatter plots +of speed, density, and temperature observed in 1972 and early 1973, +when the spacecraft was comparatively close to the Sun, with +scatter plots at later times and latger distances. + +NOTE 1: To compare solar wind densities and temperatures observed +at different heliocentric distances, it is necessary to account for +evolutionary effects as the solar wind is convected outward from +the Sun. This is done by scaling the density, N, by heliocentric +distance squared, to account for simple radial expansion and by +scaling the temperature, T, by R^-0.6 to account for the +empirically observed power-law dependance, which is significantly +hotter than would be expected for simple adiabatic cooling. + +NOTE 2: While 'viewpoints' was NOT originally designed to display +time series data, it can be used for this purpose. + + +! File name: sample.txt - Hourly averaged Pioneer 10 solar wind parameters, 1972-1978 +! Field Parameter Comments +! 1 Year - Year of measurement (Spacecraft ephemeris time at Pioneer 10) +! 2 days-1950 - Time of measurement in days since day 1 of 1950 +! 3 R(AU) - Heliocentric distance of spacecraft in AU +! 4 Phi - Heliographic longitude of spacecraft +! 5 Theta - Heliographic latitude of spacecraft +! 6 V(km/s) - Solar wind speed (km/s) +! 7 NR2(#/cc) - Solar wind proton density multipled by R(AU)^2 to account for radial expansion +! 8 TR-.6(K) - Solar wind proton temperature multipled by R(AU)^(-0.6) to account for radial expansion +! 9 E/W - Solar wind E/W flow angle (+ = in the direction of planetary rotation) +! 10 N/S - Solar wind N/S flow angle (+ = north of the ecliptic) +! 11 N(#/cc) - Unmodified solar wind proton density +! 12 T(K) - Unmodified solar wind proton temperature + Year days-1950 R_AU Phi Theta V(km/s) NR2(#/cc) TR-.6(K) E/W N/S N(#/cc) T(K) + 1973 8401.0000 3.35613 -66.357 -1.558 323.378 9.230828 4512.5 0.871 -1.960 0.819527 9330.9 + 1973 8401.0417 3.35641 -66.353 -1.558 324.071 9.638469 5078.6 1.611 -2.156 0.855575 10502.0 + 1973 8401.0833 3.35669 -66.348 -1.558 318.470 11.603700 5170.5 1.131 -2.431 1.029850 10692.6 + 1973 8401.1250 3.35697 -66.343 -1.558 320.427 18.037112 4589.0 2.875 -3.245 1.600560 9490.5 + 1973 8401.2083 3.35753 -66.334 -1.557 323.891 17.943892 6167.9 3.389 -4.430 1.591756 12757.1 + 1973 8401.2500 3.35781 -66.329 -1.557 314.161 21.142727 6616.6 1.903 -4.754 1.875203 13685.7 + 1973 8401.2917 3.35809 -66.324 -1.557 313.777 21.553091 7349.5 2.516 -4.421 1.911280 15202.4 + 1973 8401.3333 3.35837 -66.320 -1.557 315.775 20.507291 6770.0 3.275 -3.545 1.818237 14004.4 + 1973 8401.3750 3.35865 -66.315 -1.557 314.674 16.684952 5431.6 3.303 -3.288 1.479090 11236.4 + 1973 8401.4167 3.35893 -66.310 -1.557 309.441 17.818612 5698.4 2.730 -3.644 1.579323 11789.0 + 1973 8401.5000 3.35949 -66.301 -1.557 307.265 13.367473 5107.7 1.608 -2.427 1.184408 10568.0 + 1973 8401.5417 3.35978 -66.296 -1.557 307.449 11.578219 4689.9 1.086 -2.623 1.025702 9704.0 + 1973 8401.5833 3.36006 -66.291 -1.556 307.415 11.215317 4828.1 1.104 -2.634 0.993387 9990.5 + 1973 8401.6250 3.36034 -66.286 -1.556 307.485 11.281679 4760.3 1.111 -2.637 0.999098 9850.7 + 1973 8401.6667 3.36062 -66.282 -1.556 308.293 12.167288 4800.8 1.723 -2.613 1.077347 9934.9 + -- cgit v1.2.3