datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2004,01 0:30:00,31 ,0.389224,23.99341,2.872104,4.452446
sgpcmbeC1.c1,2004,01 1:30:00,31 ,0.287128,7.334761,2.060245,2.067883
sgpcmbeC1.c1,2004,01 2:30:00,31 ,0.299351,15.75399,2.584288,3.709481
sgpcmbeC1.c1,2004,01 3:30:00,31 ,0.309391,12.30588,2.141237,2.774836
sgpcmbeC1.c1,2004,01 4:30:00,31 ,0.311312,15.66618,2.917366,4.100132
sgpcmbeC1.c1,2004,01 5:30:00,31 ,0.317543,35.09388, 3.31188, 6.80198
sgpcmbeC1.c1,2004,01 6:30:00,31 ,0.379583, 32.4867,4.426687, 7.09654
sgpcmbeC1.c1,2004,01 7:30:00,31 , 0.38633,22.60409,2.931955,4.752838
sgpcmbeC1.c1,2004,01 8:30:00,31 ,0.379281,14.88602,2.928598,3.606288
sgpcmbeC1.c1,2004,01 9:30:00,31 ,0.520698,18.00433,2.983373,3.694481
sgpcmbeC1.c1,2004,0110:30:00,31 ,0.636268,14.67246, 2.71131,2.674836
sgpcmbeC1.c1,2004,0111:30:00,31 ,0.470002,18.04606,3.518218,4.408562
sgpcmbeC1.c1,2004,0112:30:00,31 ,0.516526,19.50959,2.850627,3.589219
sgpcmbeC1.c1,2004,0113:30:00,31 ,0.477314,7.438491,2.187464,2.032123
sgpcmbeC1.c1,2004,0114:30:00,31 ,0.381741,7.216619,2.035478,1.748401
sgpcmbeC1.c1,2004,0115:30:00,31 ,0.386013,14.41358,  2.1084,3.068735
sgpcmbeC1.c1,2004,0116:30:00,31 ,0.436644,7.281714,1.939631,1.787878
sgpcmbeC1.c1,2004,0117:30:00,31 ,0.475753,23.60191,3.060613,4.548047
sgpcmbeC1.c1,2004,0118:30:00,31 ,0.381333,20.77258,2.384221,3.801602
sgpcmbeC1.c1,2004,0119:30:00,31 ,0.450448,26.12573,2.898935,5.051584
sgpcmbeC1.c1,2004,0120:30:00,31 ,0.395517,4.365931,1.546573,1.233909
sgpcmbeC1.c1,2004,0121:30:00,31 ,0.325395,25.74116,3.262482,5.547554
sgpcmbeC1.c1,2004,0122:30:00,31 ,  0.5581,10.37541,2.155531,2.332271
sgpcmbeC1.c1,2004,0123:30:00,31 ,0.444432,25.92966,2.830531,4.818601