datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2001,07 0:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 2:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 3:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,07 5:30:00,31 , 1.64718,20.45313,8.903862,3.966379
sgpcmbeC1.c1,2001,07 6:30:00,31 ,6.471731,31.00863,16.38842,7.132403
sgpcmbeC1.c1,2001,07 7:30:00,31 ,  3.5001,64.91891, 16.2137,14.08386
sgpcmbeC1.c1,2001,07 8:30:00,31 ,2.634949,68.16402,14.45818,15.85661
sgpcmbeC1.c1,2001,07 9:30:00,31 ,0.846784,84.12891,15.83964,20.14175
sgpcmbeC1.c1,2001,0710:30:00,31 ,0.800512,83.00227,15.67884,23.20941
sgpcmbeC1.c1,2001,0711:30:00,31 ,0.792433,127.9649,24.09704,31.16061
sgpcmbeC1.c1,2001,0712:30:00,30 ,1.153334,118.6035,27.74647,30.14241
sgpcmbeC1.c1,2001,0713:30:00,31 ,1.511007,112.7963,25.06165,25.53132
sgpcmbeC1.c1,2001,0714:30:00,31 ,1.712985,152.6216,33.39058,40.31773
sgpcmbeC1.c1,2001,0715:30:00,31 ,2.335373,133.2398,31.75624,36.06212
sgpcmbeC1.c1,2001,0716:30:00,31 ,1.614499,101.9644,18.27251,21.25428
sgpcmbeC1.c1,2001,0717:30:00,31 ,4.437973,58.88734,15.24419,13.22717
sgpcmbeC1.c1,2001,0718:30:00,31 ,7.014958,76.51037,16.95794,13.09087
sgpcmbeC1.c1,2001,0719:30:00,31 ,       0,19.57255, 12.3168,3.621743
sgpcmbeC1.c1,2001,0720:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0721:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0722:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2001,0723:30:00,27 ,       0,       0,       0,       0