datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,03 0:30:00,29 ,       0, 0.14788,0.005099,0.027461
sgpcmbeC1.c1,1999,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 3:30:00,30 ,       0,0.202921,0.006764,0.037048
sgpcmbeC1.c1,1999,03 4:30:00,29 ,       0,0.054593,0.001883,0.010138
sgpcmbeC1.c1,1999,03 5:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,03 6:30:00,29 ,       0,19.58651,4.793847,6.116683
sgpcmbeC1.c1,1999,03 7:30:00,29 ,5.239357,170.9037,75.35455,51.16874
sgpcmbeC1.c1,1999,03 8:30:00,29 ,14.15572,386.6486,206.5167,115.6548
sgpcmbeC1.c1,1999,03 9:30:00,29 , 12.0919,582.8244,367.3046,166.4932
sgpcmbeC1.c1,1999,0310:30:00,29 ,14.12459,744.2278,458.9325,214.2167
sgpcmbeC1.c1,1999,0311:30:00,29 ,23.22893,842.0505,533.7177,261.6893
sgpcmbeC1.c1,1999,0312:30:00,30 ,32.36519,875.0016,561.7659,275.5081
sgpcmbeC1.c1,1999,0313:30:00,30 ,60.04349,848.8611, 527.686,266.1318
sgpcmbeC1.c1,1999,0314:30:00,30 ,96.78655, 754.056,487.4202,241.4433
sgpcmbeC1.c1,1999,0315:30:00,30 ,55.30349,608.5674,390.3297,198.6563
sgpcmbeC1.c1,1999,0316:30:00,30 , 26.6217,418.0884,246.8968,140.3845
sgpcmbeC1.c1,1999,0317:30:00,30 ,11.73886,206.3534,107.5776,68.70982
sgpcmbeC1.c1,1999,0318:30:00,30 , 0.47693, 43.8767,14.89946,11.71735
sgpcmbeC1.c1,1999,0319:30:00,29 ,       0,0.276175,0.015283,0.058979
sgpcmbeC1.c1,1999,0320:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0321:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0322:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0323:30:00,29 ,       0,       0,       0,       0