datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2006,02 0:30:00,26 ,       0,4.541764,1.907503,1.822453
sgpcmbeC1.c1,2006,02 1:30:00,25 ,       0,4.149417,   1.669,1.790715
sgpcmbeC1.c1,2006,02 2:30:00,26 ,       0, 4.09393,1.640077,1.643452
sgpcmbeC1.c1,2006,02 3:30:00,27 ,       0,4.224395,1.374269,1.661354
sgpcmbeC1.c1,2006,02 4:30:00,27 ,       0,4.338836,1.083686,1.436768
sgpcmbeC1.c1,2006,02 5:30:00,27 ,       0,4.436509,1.115772, 1.55785
sgpcmbeC1.c1,2006,02 6:30:00,28 ,       0,4.440994,0.995674,1.515566
sgpcmbeC1.c1,2006,02 7:30:00,28 ,4.324973, 53.7231,19.46617,14.77825
sgpcmbeC1.c1,2006,02 8:30:00,28 , 24.6967,249.5974,140.0326,61.38335
sgpcmbeC1.c1,2006,02 9:30:00,28 ,58.16714, 452.972,292.8204, 109.627
sgpcmbeC1.c1,2006,0210:30:00,28 ,110.4533, 614.251,427.3244,150.5671
sgpcmbeC1.c1,2006,0211:30:00,28 ,126.6342,705.4017,527.9613,  169.06
sgpcmbeC1.c1,2006,0212:30:00,28 ,162.5461, 739.474,568.3378,163.3463
sgpcmbeC1.c1,2006,0213:30:00,28 ,153.4137,734.4443,564.8826,150.6023
sgpcmbeC1.c1,2006,0214:30:00,28 ,116.4765,650.3591,506.8836,133.2131
sgpcmbeC1.c1,2006,0215:30:00,28 ,108.6507,510.4645,386.9329,107.1038
sgpcmbeC1.c1,2006,0216:30:00,28 ,72.04794,324.8725,230.3607, 69.8243
sgpcmbeC1.c1,2006,0217:30:00,28 ,22.00553,136.4157,69.45258,31.36852
sgpcmbeC1.c1,2006,0218:30:00,28 ,       0,11.12468,3.167325, 2.62118
sgpcmbeC1.c1,2006,0219:30:00,28 ,       0,5.255689,1.965223,1.944112
sgpcmbeC1.c1,2006,0220:30:00,27 ,       0,5.125882,2.182874,1.961393
sgpcmbeC1.c1,2006,0221:30:00,26 ,       0,4.228498,2.077417,1.721767
sgpcmbeC1.c1,2006,0222:30:00,26 ,       0,4.657813,2.057727,1.753007
sgpcmbeC1.c1,2006,0223:30:00,26 ,       0,4.826653,1.807147,1.904452