datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2005,02 0:30:00,27 , 0.39726,6.332428,1.792099,1.698494
sgpcmbeC1.c1,2005,02 1:30:00,26 ,0.379317,6.216372,  1.7054,1.617731
sgpcmbeC1.c1,2005,02 2:30:00,26 ,0.410777,6.487113,1.719607,1.694515
sgpcmbeC1.c1,2005,02 3:30:00,26 ,0.433735,7.275884,1.717052,1.793789
sgpcmbeC1.c1,2005,02 4:30:00,26 ,0.508749,6.124338,1.574627,1.461845
sgpcmbeC1.c1,2005,02 5:30:00,25 ,0.503622,5.967999,1.553219,1.371147
sgpcmbeC1.c1,2005,02 6:30:00,25 ,0.493716,7.584135,1.575767,1.546825
sgpcmbeC1.c1,2005,02 7:30:00,25 ,0.513359,6.514472,1.656119,1.584713
sgpcmbeC1.c1,2005,02 8:30:00,26 ,0.506589,5.891787,1.643445,1.473681
sgpcmbeC1.c1,2005,02 9:30:00,27 ,0.516959,5.590301,1.479357, 1.24752
sgpcmbeC1.c1,2005,0210:30:00,27 ,0.516722,5.844028,1.412932,1.130766
sgpcmbeC1.c1,2005,0211:30:00,27 ,0.504011,5.192386,1.341246,0.972566
sgpcmbeC1.c1,2005,0212:30:00,27 ,0.502568,4.492561,1.314687,0.851272
sgpcmbeC1.c1,2005,0213:30:00,27 ,0.525963,3.622993,1.289286,0.733906
sgpcmbeC1.c1,2005,0214:30:00,27 ,0.547152,3.169942,1.313961,0.689541
sgpcmbeC1.c1,2005,0215:30:00,27 , 0.57221, 3.21561,1.294581,0.630063
sgpcmbeC1.c1,2005,0216:30:00,27 , 0.56768,3.322039, 1.29283,0.608232
sgpcmbeC1.c1,2005,0217:30:00,27 ,0.584029,6.775302,1.420684,1.159589
sgpcmbeC1.c1,2005,0218:30:00,27 ,0.538208,6.595773,1.432297,1.140028
sgpcmbeC1.c1,2005,0219:30:00,27 ,0.434343,5.919175,  1.4406,1.111897
sgpcmbeC1.c1,2005,0220:30:00,27 ,0.427191,5.850619,1.459716, 1.16551
sgpcmbeC1.c1,2005,0221:30:00,27 ,0.451306,5.658447,1.405651,1.069131
sgpcmbeC1.c1,2005,0222:30:00,27 ,0.436292,5.938485,1.509233,1.280758
sgpcmbeC1.c1,2005,0223:30:00,27 , 0.41681, 6.55537,1.617512,1.524151