#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
require 'json'

j = ARGF.readlines.join
x = JSON.load(j)
puts("#,yyyy-mm-dd,hh:mm:ss,lat,long,[alt],[start]")
x.each do |i|
  time = Time.at(i["tm"]).strftime("%F,%T")
  printf("%s,%f,%f,,,\n", time, i["la"], i["lo"])
end