datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,28 ,       0, 1.83284,0.240395,0.447096
sgpcmbeC1.c1,2005,02 1:30:00,28 ,       0,2.177889,0.162853,0.439124
sgpcmbeC1.c1,2005,02 2:30:00,28 ,       0,0.865815,0.110107,0.239044
sgpcmbeC1.c1,2005,02 3:30:00,28 ,       0,1.527887,0.114251,0.329092
sgpcmbeC1.c1,2005,02 4:30:00,28 ,       0,0.919383,0.091815, 0.23133
sgpcmbeC1.c1,2005,02 5:30:00,28 ,       0,0.727626,0.074711,0.189122
sgpcmbeC1.c1,2005,02 6:30:00,28 ,       0,1.391618, 0.14773,0.386479
sgpcmbeC1.c1,2005,02 7:30:00,28 ,1.031033,28.75272,14.45373,8.976476
sgpcmbeC1.c1,2005,02 8:30:00,28 ,14.77029,107.4133,61.32252,30.11094
sgpcmbeC1.c1,2005,02 9:30:00,28 ,28.36492,234.6839,115.5048,57.90621
sgpcmbeC1.c1,2005,0210:30:00,28 ,66.01949,332.8771, 158.477,86.86038
sgpcmbeC1.c1,2005,0211:30:00,28 ,73.53355,358.7978, 168.839,83.96083
sgpcmbeC1.c1,2005,0212:30:00,28 ,79.27567,351.2613,179.0599,84.52283
sgpcmbeC1.c1,2005,0213:30:00,28 ,74.65771,401.3553,173.1666,100.0007
sgpcmbeC1.c1,2005,0214:30:00,28 ,50.82234,339.3366,157.4508,80.05178
sgpcmbeC1.c1,2005,0215:30:00,28 ,36.25513,260.5399, 134.584,68.85248
sgpcmbeC1.c1,2005,0216:30:00,28 ,23.04161,204.3334,85.74589,46.36128
sgpcmbeC1.c1,2005,0217:30:00,28 , 6.07484,81.96886,35.00906,19.16987
sgpcmbeC1.c1,2005,0218:30:00,28 ,       0,8.230691,2.517294,2.380096
sgpcmbeC1.c1,2005,0219:30:00,28 ,       0,3.013796,0.355926,0.771787
sgpcmbeC1.c1,2005,0220:30:00,28 ,       0,1.758008,0.322618, 0.59562
sgpcmbeC1.c1,2005,0221:30:00,28 ,       0, 1.55992,0.273798,0.499175
sgpcmbeC1.c1,2005,0222:30:00,28 ,       0,1.786489,0.284278,0.519668
sgpcmbeC1.c1,2005,0223:30:00,28 ,       0,1.924577,0.144814,0.409126