datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,02 0:30:00,28 ,0.231125,3.139119,1.084789,0.580103
sgpcmbeC1.c1,2007,02 1:30:00,28 ,0.235035,3.128505,1.066791,0.571718
sgpcmbeC1.c1,2007,02 2:30:00,28 ,0.225657,3.216108,1.070736,0.597129
sgpcmbeC1.c1,2007,02 3:30:00,28 , 0.24861,2.999999,1.059073,0.586725
sgpcmbeC1.c1,2007,02 4:30:00,28 ,0.314798,2.644196,1.053324,0.560152
sgpcmbeC1.c1,2007,02 5:30:00,28 , 0.31405,2.981424,1.031328,0.558451
sgpcmbeC1.c1,2007,02 6:30:00,28 ,0.306395,3.523775,1.019638,0.624914
sgpcmbeC1.c1,2007,02 7:30:00,28 ,0.333947, 2.59119,0.973084,0.505364
sgpcmbeC1.c1,2007,02 8:30:00,28 ,0.314831,2.422419,0.941454,0.466565
sgpcmbeC1.c1,2007,02 9:30:00,28 ,0.296819,2.349983,0.931769,0.445471
sgpcmbeC1.c1,2007,0210:30:00,28 ,0.305756,2.818968, 0.95022,0.514982
sgpcmbeC1.c1,2007,0211:30:00,28 ,0.313415,  2.8181,0.962126,0.526143
sgpcmbeC1.c1,2007,0212:30:00,28 ,0.297216, 2.34816, 0.96139,0.464642
sgpcmbeC1.c1,2007,0213:30:00,28 , 0.27759,2.415198, 0.98618, 0.47353
sgpcmbeC1.c1,2007,0214:30:00,28 ,0.330524,3.951538,1.075451,0.683067
sgpcmbeC1.c1,2007,0215:30:00,27 ,0.280208,3.049783,1.050905,0.561078
sgpcmbeC1.c1,2007,0216:30:00,28 ,0.243281,2.441158,1.064216,0.492935
sgpcmbeC1.c1,2007,0217:30:00,28 ,0.251143,2.716667,  1.1055,0.554606
sgpcmbeC1.c1,2007,0218:30:00,28 ,0.281894,2.572864,1.116276,0.544612
sgpcmbeC1.c1,2007,0219:30:00,28 ,0.265514,2.470741,1.098225,0.505672
sgpcmbeC1.c1,2007,0220:30:00,28 ,0.258522, 2.58136,1.094455,0.511063
sgpcmbeC1.c1,2007,0221:30:00,28 ,0.236748,2.525648,1.087383,0.506629
sgpcmbeC1.c1,2007,0222:30:00,28 ,0.228514,2.440308,1.078761,0.484642
sgpcmbeC1.c1,2007,0223:30:00,28 ,0.228442,2.708196,1.086211,0.518356