datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,04 0:30:00,30 ,       0,1.655101,0.130352,0.350282
sgpcmbeC1.c1,2006,04 1:30:00,30 ,       0,1.015575,0.057861,0.191718
sgpcmbeC1.c1,2006,04 2:30:00,30 ,       0, 1.69657,0.185004, 0.43995
sgpcmbeC1.c1,2006,04 3:30:00,30 ,       0, 1.60861,0.199253,0.482992
sgpcmbeC1.c1,2006,04 4:30:00,29 ,       0,1.495841,0.163366, 0.39438
sgpcmbeC1.c1,2006,04 5:30:00,30 ,       0,9.335556,1.658199,2.378028
sgpcmbeC1.c1,2006,04 6:30:00,30 ,2.451709,54.30636, 31.1214,16.98119
sgpcmbeC1.c1,2006,04 7:30:00,30 ,2.601521,94.97771,47.14633,24.58524
sgpcmbeC1.c1,2006,04 8:30:00,30 ,5.567408,175.8821,64.03142,  35.184
sgpcmbeC1.c1,2006,04 9:30:00,30 ,1.739143,184.6379,73.43789,46.06867
sgpcmbeC1.c1,2006,0410:30:00,30 ,13.07921,285.6501,81.29497,69.05214
sgpcmbeC1.c1,2006,0411:30:00,30 ,11.39867,300.7144, 78.5968,84.16545
sgpcmbeC1.c1,2006,0412:30:00,30 ,2.797601,223.8845,55.35301,63.38573
sgpcmbeC1.c1,2006,0413:30:00,30 ,14.44035,215.7328,73.25409, 65.5981
sgpcmbeC1.c1,2006,0414:30:00,30 ,12.80191,345.8945,69.58397,70.39207
sgpcmbeC1.c1,2006,0415:30:00,30 , 12.1623,210.3345, 64.0822,41.43425
sgpcmbeC1.c1,2006,0416:30:00,30 ,4.273268,185.0739,70.67615,36.68481
sgpcmbeC1.c1,2006,0417:30:00,30 ,0.888137,123.1836,58.35826,24.67735
sgpcmbeC1.c1,2006,0418:30:00,30 ,       0,57.35649,37.59297,15.75544
sgpcmbeC1.c1,2006,0419:30:00,30 ,       0,14.71975,1.806549,2.876398
sgpcmbeC1.c1,2006,0420:30:00,30 ,       0,1.751998,0.188004,0.504645
sgpcmbeC1.c1,2006,0421:30:00,30 ,       0,1.756506,0.120118, 0.36723
sgpcmbeC1.c1,2006,0422:30:00,30 ,       0,1.613366,0.264671,0.493395
sgpcmbeC1.c1,2006,0423:30:00,30 ,       0,1.571458,0.084268,0.297035