datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2000,03 0:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 1:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 4:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,03 6:30:00,31 ,       0,26.28874,6.855399,8.564084
sgpcmbeC1.c1,2000,03 7:30:00,31 ,0.450505,79.55993,33.03023,24.19526
sgpcmbeC1.c1,2000,03 8:30:00,31 ,2.721295,109.6782,47.32166,31.46349
sgpcmbeC1.c1,2000,03 9:30:00,31 ,4.926644,188.1284,55.73147, 39.6695
sgpcmbeC1.c1,2000,0310:30:00,31 ,3.489621,125.4909, 49.8345,28.99493
sgpcmbeC1.c1,2000,0311:30:00,31 ,7.609823,236.3618,85.20571, 72.5613
sgpcmbeC1.c1,2000,0312:30:00,31 ,3.059447,262.2327,74.66772,70.25634
sgpcmbeC1.c1,2000,0313:30:00,31 ,7.285373,318.6054,96.17167,  89.682
sgpcmbeC1.c1,2000,0314:30:00,31 ,10.22294,244.0325,97.90758,71.25037
sgpcmbeC1.c1,2000,0315:30:00,31 ,4.871467,243.3585,82.18461,66.48346
sgpcmbeC1.c1,2000,0316:30:00,31 ,5.981996,191.5961,60.74102,43.21259
sgpcmbeC1.c1,2000,0317:30:00,31 ,2.276608,94.20741,48.97091,27.21348
sgpcmbeC1.c1,2000,0318:30:00,31 ,1.553377,33.79444,15.27798,10.92161
sgpcmbeC1.c1,2000,0319:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0320:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0321:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0322:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2000,0323:30:00,31 ,       0,       0,       0,       0