datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,12 0:30:00,28 ,       0,1203.381, 49.6942,227.2624
sgpcmbeC1.c1,2004,12 1:30:00,27 ,       0,130.8443,9.651693,28.29789
sgpcmbeC1.c1,2004,12 2:30:00,27 ,       0,108.0941,6.060576, 20.5227
sgpcmbeC1.c1,2004,12 3:30:00,27 ,       0,133.5317, 6.92213,25.39497
sgpcmbeC1.c1,2004,12 4:30:00,27 ,       0,145.6281,7.352815,  27.713
sgpcmbeC1.c1,2004,12 5:30:00,27 ,       0,152.1144,7.849983,29.02682
sgpcmbeC1.c1,2004,12 6:30:00,26 ,       0, 121.052, 7.32236,23.95003
sgpcmbeC1.c1,2004,12 7:30:00,26 ,       0,82.52177,6.315663,17.68324
sgpcmbeC1.c1,2004,12 8:30:00,28 ,       0,51.19313,5.087423, 12.8727
sgpcmbeC1.c1,2004,12 9:30:00,29 ,       0,22.31551,1.834963,4.428571
sgpcmbeC1.c1,2004,1210:30:00,28 ,       0,25.81624, 2.41567,5.987376
sgpcmbeC1.c1,2004,1211:30:00,28 ,       0,53.18357,3.652895,10.30829
sgpcmbeC1.c1,2004,1212:30:00,28 ,       0,18.49598,2.028728,3.575661
sgpcmbeC1.c1,2004,1213:30:00,29 ,       0,171.5695,7.195176,31.64952
sgpcmbeC1.c1,2004,1214:30:00,27 ,       0,6.604207, 1.27693,1.613699
sgpcmbeC1.c1,2004,1215:30:00,27 ,       0,6.229958,1.561318,1.787719
sgpcmbeC1.c1,2004,1216:30:00,27 ,       0,7.365435,2.447398,2.371347
sgpcmbeC1.c1,2004,1217:30:00,28 ,       0, 846.582,33.21058,159.4255
sgpcmbeC1.c1,2004,1218:30:00,28 ,       0,609.1608,24.31914,114.6496
sgpcmbeC1.c1,2004,1219:30:00,28 ,       0,583.5784,  23.234,109.8426
sgpcmbeC1.c1,2004,1220:30:00,28 ,       0,676.1814,27.07861,127.2707
sgpcmbeC1.c1,2004,1221:30:00,28 ,       0,734.0917,29.69098,138.1388
sgpcmbeC1.c1,2004,1222:30:00,27 ,       0,12.97209,3.157096,3.755419
sgpcmbeC1.c1,2004,1223:30:00,27 ,       0,16.49076,2.797602,3.845583