datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,03 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 1:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 4:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,03 6:30:00,31 ,       0,13.90058,3.796293,4.694801
sgpcmbeC1.c1,2006,03 7:30:00,30 ,7.128407,116.3918,43.29528,24.48759
sgpcmbeC1.c1,2006,03 8:30:00,30 , 29.8483,299.3692,103.7253,60.58429
sgpcmbeC1.c1,2006,03 9:30:00,30 ,31.94664,320.5634,144.4838,89.84032
sgpcmbeC1.c1,2006,0310:30:00,30 ,55.01121, 384.377,177.8713,101.4186
sgpcmbeC1.c1,2006,0311:30:00,31 ,49.89885,548.8429, 193.173, 121.844
sgpcmbeC1.c1,2006,0312:30:00,31 ,48.37501,521.8947,195.0048,121.2466
sgpcmbeC1.c1,2006,0313:30:00,31 ,56.22879,478.6879,204.2971,129.5138
sgpcmbeC1.c1,2006,0314:30:00,31 ,44.16596,425.5695,194.5849,117.8588
sgpcmbeC1.c1,2006,0315:30:00,31 ,18.29688,307.8383,144.8821,82.16128
sgpcmbeC1.c1,2006,0316:30:00,31 ,17.03353,211.6749, 109.704,55.47377
sgpcmbeC1.c1,2006,0317:30:00,31 ,5.566039, 125.749,61.77854,30.39342
sgpcmbeC1.c1,2006,0318:30:00,31 ,       0,34.73629, 11.1793,7.938937
sgpcmbeC1.c1,2006,0319:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0320:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0321:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0322:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2006,0323:30:00,25 ,       0,       0,       0,       0