datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,05 0:30:00,29 ,0.840888,17.71869,4.799393,4.944116
sgpcmbeC1.c1,2007,05 1:30:00,29 ,0.900431,25.32765,4.797599,6.125682
sgpcmbeC1.c1,2007,05 2:30:00,29 ,0.747597,20.17212,4.301278,4.751448
sgpcmbeC1.c1,2007,05 3:30:00,29 ,1.003351,24.75109,5.288501,5.803009
sgpcmbeC1.c1,2007,05 4:30:00,29 ,0.774326,16.57793,4.659731, 4.56146
sgpcmbeC1.c1,2007,05 5:30:00,29 ,0.916911,  18.151, 4.35692,4.240727
sgpcmbeC1.c1,2007,05 6:30:00,29 ,0.708677,19.26559,4.745925,4.956145
sgpcmbeC1.c1,2007,05 7:30:00,29 ,1.043005,15.32806,4.758559,3.982854
sgpcmbeC1.c1,2007,05 8:30:00,29 ,0.927684,7.252981, 3.53684,1.666223
sgpcmbeC1.c1,2007,05 9:30:00,29 ,0.956242,26.52949,5.667331, 6.04103
sgpcmbeC1.c1,2007,0510:30:00,29 ,0.972382,21.43708,5.834463,5.839239
sgpcmbeC1.c1,2007,0511:30:00,29 ,1.118456, 13.3849,4.444075,3.132157
sgpcmbeC1.c1,2007,0512:30:00,29 ,0.995971,15.51847,5.894038,4.374749
sgpcmbeC1.c1,2007,0513:30:00,29 ,0.926542,29.67755,6.511299,5.585079
sgpcmbeC1.c1,2007,0514:30:00,30 ,0.959175,13.13408,5.450408,3.202498
sgpcmbeC1.c1,2007,0515:30:00,30 , 0.71145,16.07394,5.202755,    3.96
sgpcmbeC1.c1,2007,0516:30:00,30 ,0.907888,15.53538,5.571375,3.811347
sgpcmbeC1.c1,2007,0517:30:00,30 ,0.943352,19.06195,6.567388,5.040159
sgpcmbeC1.c1,2007,0518:30:00,30 ,0.807661,15.88845,5.180079,4.171531
sgpcmbeC1.c1,2007,0519:30:00,30 ,1.003874,21.12029,5.377609,4.806706
sgpcmbeC1.c1,2007,0520:30:00,30 ,0.974414,13.11256,4.698205, 3.67553
sgpcmbeC1.c1,2007,0521:30:00,30 , 1.07263,  19.368,6.314163,5.419364
sgpcmbeC1.c1,2007,0522:30:00,30 ,0.795719,19.57056,5.796626,5.322689
sgpcmbeC1.c1,2007,0523:30:00,29 ,0.870106,18.75086,4.640776,3.890369