datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,01 0:30:00,21 ,       0,2.742521,1.346237,0.935268
sgpcmbeC1.c1,2007,01 1:30:00,20 ,       0,3.057937,1.513376,1.049978
sgpcmbeC1.c1,2007,01 2:30:00,17 ,       0,2.976069, 1.41016, 1.08939
sgpcmbeC1.c1,2007,01 3:30:00,17 ,       0,3.133908,1.264309,1.156805
sgpcmbeC1.c1,2007,01 4:30:00,13 ,       0, 2.32601,1.302296,0.989504
sgpcmbeC1.c1,2007,01 5:30:00,15 ,       0,2.342379,1.320324,0.983671
sgpcmbeC1.c1,2007,01 6:30:00,22 ,       0,2.800252,0.927691,0.959882
sgpcmbeC1.c1,2007,01 7:30:00,31 ,0.021435, 4.85884,1.232289,1.347586
sgpcmbeC1.c1,2007,01 8:30:00,31 ,0.037575, 103.342,38.71846,37.37855
sgpcmbeC1.c1,2007,01 9:30:00,31 , 0.00021,273.0177,121.8867,105.0693
sgpcmbeC1.c1,2007,0110:30:00,31 ,       0,433.1865,199.6763, 172.261
sgpcmbeC1.c1,2007,0111:30:00,31 ,0.000572,542.1013,  270.61,205.4712
sgpcmbeC1.c1,2007,0112:30:00,31 ,  0.0009,593.1758,311.8494,227.5422
sgpcmbeC1.c1,2007,0113:30:00,31 ,0.057877, 561.077,302.5057, 212.721
sgpcmbeC1.c1,2007,0114:30:00,31 ,0.001663, 463.806,249.9831,182.0541
sgpcmbeC1.c1,2007,0115:30:00,31 ,       0,333.7826,166.5295,129.4185
sgpcmbeC1.c1,2007,0116:30:00,31 ,       0,165.5902,66.49362,61.37249
sgpcmbeC1.c1,2007,0117:30:00,31 ,0.130759,25.98797, 7.54167,9.086226
sgpcmbeC1.c1,2007,0118:30:00,27 ,       0,2.789965, 0.89783,0.988358
sgpcmbeC1.c1,2007,0119:30:00,25 ,       0,2.792629, 1.08659,0.952726
sgpcmbeC1.c1,2007,0120:30:00,20 ,       0,2.697652,1.369012,0.940887
sgpcmbeC1.c1,2007,0121:30:00,22 ,       0,2.511872,1.006994,0.911857
sgpcmbeC1.c1,2007,0122:30:00,19 ,       0,2.967117,1.240846,0.982869
sgpcmbeC1.c1,2007,0123:30:00,20 ,       0,2.845157,1.212167,1.009827