datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 3:30:00,17 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 4:30:00,13 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 5:30:00,15 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 6:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,01 7:30:00,31 ,       0,6.976404,2.770712,1.992777
sgpcmbeC1.c1,2007,01 8:30:00,31 , 4.25089,97.81183,39.94255,21.00154
sgpcmbeC1.c1,2007,01 9:30:00,31 ,12.46628,199.0191,85.76582,45.65563
sgpcmbeC1.c1,2007,0110:30:00,31 ,28.68903,310.0155,123.8452,76.41491
sgpcmbeC1.c1,2007,0111:30:00,31 ,49.86415,386.2195,137.4361,84.06153
sgpcmbeC1.c1,2007,0112:30:00,31 ,54.99617,349.2632,134.5046,83.10214
sgpcmbeC1.c1,2007,0113:30:00,31 ,54.00532,368.3535,133.4972,77.58334
sgpcmbeC1.c1,2007,0114:30:00,31 ,50.50973, 351.088,124.2783,77.53012
sgpcmbeC1.c1,2007,0115:30:00,31 ,43.24408,192.6944,87.79563,43.29753
sgpcmbeC1.c1,2007,0116:30:00,31 ,13.73254,102.8312,52.33716,22.41037
sgpcmbeC1.c1,2007,0117:30:00,31 ,       0,26.21397,10.90308,6.419321
sgpcmbeC1.c1,2007,0118:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0119:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,       0,       0,       0