#!/bin/bash
#CH1 green
#CH2 hsync
#CH4 vsync

for i in  1 2 4; do
tr ',' '\n' < ch$i.dat > ch$i.txt
done

awk '{c+=$1} END {print c/NR}' < ch2.txt
awk '{c+=$1} END {print c/NR}' < ch4.txt




#14879.4
#23161.1

awk 'BEGIN { q=15000; n=0; }; {a=b; b=c; c=$1;  if ((a<q) && ( b<q) &&(c>=q)) { n++;} ; print n }' < ch2.txt > ch2.up
awk 'BEGIN { q=7000; n=0; }; {a=b; b=c; c=$1;  if ((a<q) && ( b<q) &&(c>=q)) { n++;} ; print n }' < ch4.txt > ch4.up

awk 'BEGIN { q=15000; n=0; }; {a=b; b=c; c=$1;  if ((a>q) && ( b>q) &&(c<=q)) { n++;} ; print n }' < ch2.txt > ch2.down
awk 'BEGIN { q=25000; n=0; }; {a=b; b=c; c=$1;  if ((a>q) && ( b>q) &&(c<=q)) { n++;} ; print n }' < ch4.txt > ch4.down

paste ch2.up ch2.down  ch4.up ch4.down > cnt

awk 'BEGIN {op=0;}; {p=$3; if (p!=op) { print "S+ ",$1, " " p; op=p;}}' < cnt
awk 'BEGIN {op=0;}; {p=$4; if (p!=op) { print "S- ",$1, " " p; op=p;}}' < cnt