datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,03 0:30:00,25 ,       0,3.126228,0.958609,1.057379
sgpcmbeC1.c1,2006,03 1:30:00,26 ,       0,3.754198,1.080472,1.297626
sgpcmbeC1.c1,2006,03 2:30:00,27 ,       0,3.023398,  0.8474,0.998232
sgpcmbeC1.c1,2006,03 3:30:00,26 ,       0, 3.18911,0.912805,1.130758
sgpcmbeC1.c1,2006,03 4:30:00,25 ,       0,3.343791,0.903208,1.161315
sgpcmbeC1.c1,2006,03 5:30:00,25 ,       0,2.691191,0.869387,1.065695
sgpcmbeC1.c1,2006,03 6:30:00,31 ,       0,15.61966,2.179173,3.709572
sgpcmbeC1.c1,2006,03 7:30:00,30 ,0.063236,159.4223,39.08284,49.92895
sgpcmbeC1.c1,2006,03 8:30:00,30 ,       0,362.6408, 121.767,132.5291
sgpcmbeC1.c1,2006,03 9:30:00,30 ,       0,551.5685,205.9064,209.8532
sgpcmbeC1.c1,2006,0310:30:00,30 ,0.002243,703.6904,312.6505,270.7161
sgpcmbeC1.c1,2006,0311:30:00,31 ,       0,802.5322,356.9136, 317.488
sgpcmbeC1.c1,2006,0312:30:00,31 ,0.000347,839.3843,369.8255,   338.4
sgpcmbeC1.c1,2006,0313:30:00,31 ,       0,776.8448,370.1069,325.5762
sgpcmbeC1.c1,2006,0314:30:00,31 ,0.032539,684.9253,306.8988, 285.343
sgpcmbeC1.c1,2006,0315:30:00,31 ,       0,538.7836,230.2948,225.2766
sgpcmbeC1.c1,2006,0316:30:00,31 ,       0,362.7313,145.6769,141.6759
sgpcmbeC1.c1,2006,0317:30:00,31 ,       0, 164.751,53.52269,60.67259
sgpcmbeC1.c1,2006,0318:30:00,31 ,0.133056,19.43574,4.998516, 6.07396
sgpcmbeC1.c1,2006,0319:30:00,20 ,       0,3.337112,0.861227,1.259275
sgpcmbeC1.c1,2006,0320:30:00,25 ,       0,3.829719,1.334691,1.423717
sgpcmbeC1.c1,2006,0321:30:00,25 ,       0,3.606916,1.263038,1.319741
sgpcmbeC1.c1,2006,0322:30:00,24 ,       0,3.175832,1.055752,1.159072
sgpcmbeC1.c1,2006,0323:30:00,25 ,       0,3.139989,1.122906,1.148765