# Determine Dorado propeller start and stop times. Input file is the output of 
# 'readlog' utility on tailCone.log
BEGIN {
    # Assume not spinning to begin with
    spinning = 0;
}

NF != 11 {
    next;
}

/^#/ {
    # Comment - skip it
    next;
}

{

    if ($7 > 20 && !spinning) {
	# Prop just started turning
	printf "%s ", $1;
	spinning = 1;
    }

    if ($7 <= 10 && spinning) {
	# Prop just stopped
	printf "%s\n", $1;
	spinning = 0;
    } 

    prevRpm = $7;
}

END {
    print " ";
}