datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,03 0:30:00,25 ,       0,0.882654,0.035306,0.176531
sgpcmbeC1.c1,2003,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 6:30:00,31 ,       0,15.75514,2.273214,4.790953
sgpcmbeC1.c1,2003,03 7:30:00,31 ,0.005825,  166.09,42.27605,53.02506
sgpcmbeC1.c1,2003,03 8:30:00,31 ,0.069679,380.2509,138.7837,133.4583
sgpcmbeC1.c1,2003,03 9:30:00,31 ,0.133865,578.9456,209.6806,219.7487
sgpcmbeC1.c1,2003,0310:30:00,31 ,0.094849,735.7852, 279.475,286.7288
sgpcmbeC1.c1,2003,0311:30:00,31 ,0.029358,834.3749,336.2519,335.6261
sgpcmbeC1.c1,2003,0312:30:00,31 ,0.080383,866.5679,437.3372,336.1629
sgpcmbeC1.c1,2003,0313:30:00,31 ,0.123703,   833.1, 455.896,318.1396
sgpcmbeC1.c1,2003,0314:30:00,31 ,0.143341,746.5288,388.8781,275.5757
sgpcmbeC1.c1,2003,0315:30:00,31 ,0.026352,594.9095, 296.206,216.8642
sgpcmbeC1.c1,2003,0316:30:00,31 ,0.001778,405.0854,177.1006,147.8969
sgpcmbeC1.c1,2003,0317:30:00,31 ,       0,193.4266, 73.5518,61.76546
sgpcmbeC1.c1,2003,0318:30:00,31 ,       0,27.24328,6.697217,8.164207
sgpcmbeC1.c1,2003,0319:30:00,31 ,       0,0.928827,0.093637,0.239375
sgpcmbeC1.c1,2003,0320:30:00,30 ,       0,0.230883,0.007696,0.042153
sgpcmbeC1.c1,2003,0321:30:00,28 ,       0,0.605112,0.021611,0.114355
sgpcmbeC1.c1,2003,0322:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0323:30:00,26 ,       0,       0,       0,       0