datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,06 0:30:00,22 ,1.620446,4.582616,3.098295,0.859743
sgpcmbeC1.c1,2003,06 1:30:00,22 ,1.548927,4.535359, 3.09528,0.821389
sgpcmbeC1.c1,2003,06 2:30:00,24 ,1.429959, 4.72102,3.235075,0.887139
sgpcmbeC1.c1,2003,06 3:30:00,24 ,1.467162,4.843381,3.316325,0.917938
sgpcmbeC1.c1,2003,06 4:30:00,23 , 1.61434, 4.30945,3.191384,0.756006
sgpcmbeC1.c1,2003,06 5:30:00,23 ,1.489265,4.265535,3.197048,0.784056
sgpcmbeC1.c1,2003,06 6:30:00,23 ,1.368175,4.634922,3.233264, 0.87927
sgpcmbeC1.c1,2003,06 7:30:00,24 ,1.314461,4.593405,3.208725,0.864536
sgpcmbeC1.c1,2003,06 8:30:00,24 ,1.225474,4.691919, 3.19244, 0.82129
sgpcmbeC1.c1,2003,06 9:30:00,25 ,1.196207,5.789385,3.311951, 0.94868
sgpcmbeC1.c1,2003,0610:30:00,25 ,1.177431,5.416208, 3.34282,0.898542
sgpcmbeC1.c1,2003,0611:30:00,25 ,1.094787,5.383885,3.349929,0.928899
sgpcmbeC1.c1,2003,0612:30:00,25 ,1.035155,5.484493,3.355142,0.951782
sgpcmbeC1.c1,2003,0613:30:00,25 ,1.196309,5.557559,3.393141,0.957619
sgpcmbeC1.c1,2003,0614:30:00,25 , 1.23268,5.656767,  3.4287,0.982091
sgpcmbeC1.c1,2003,0615:30:00,25 ,1.200395,5.878776,3.485855,1.014271
sgpcmbeC1.c1,2003,0616:30:00,25 ,1.306898,5.973181,3.526039,1.048347
sgpcmbeC1.c1,2003,0617:30:00,24 ,1.386782,5.205603,3.475142,0.989652
sgpcmbeC1.c1,2003,0618:30:00,24 ,1.464797,4.867514,3.367485,0.918682
sgpcmbeC1.c1,2003,0619:30:00,24 ,1.553778, 4.66924,3.344263,0.929618
sgpcmbeC1.c1,2003,0620:30:00,23 ,1.694791,4.528069,3.304313,0.913894
sgpcmbeC1.c1,2003,0621:30:00,23 ,1.723139,4.390691,3.291692,0.901899
sgpcmbeC1.c1,2003,0622:30:00,23 ,1.658589,4.548438,3.259629,0.967459
sgpcmbeC1.c1,2003,0623:30:00,24 ,1.580045,4.859863, 3.27902,0.973637