datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2003,03 0:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 2:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 3:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 5:30:00,31 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,03 6:30:00,31 ,       0, 17.8677,4.805247,5.441463
sgpcmbeC1.c1,2003,03 7:30:00,31 ,6.587091,28.82754,16.25859,6.415937
sgpcmbeC1.c1,2003,03 8:30:00,31 ,2.975887,80.11855,22.28254,19.20556
sgpcmbeC1.c1,2003,03 9:30:00,31 ,1.888273,99.84351,26.00817,23.12362
sgpcmbeC1.c1,2003,0310:30:00,31 ,0.881355, 95.0087,31.49392,25.48999
sgpcmbeC1.c1,2003,0311:30:00,31 ,1.128289,96.10809,36.20656,32.55671
sgpcmbeC1.c1,2003,0312:30:00,31 , 0.77124, 145.175,33.99696,37.98282
sgpcmbeC1.c1,2003,0313:30:00,31 ,0.704384,92.52309,26.31234, 25.6951
sgpcmbeC1.c1,2003,0314:30:00,31 ,1.197113,130.4305,30.77257,30.98813
sgpcmbeC1.c1,2003,0315:30:00,31 ,1.214996,125.4839,22.67136,29.56848
sgpcmbeC1.c1,2003,0316:30:00,31 , 1.18211,64.76971,18.67488,14.99154
sgpcmbeC1.c1,2003,0317:30:00,31 ,7.235718,47.59111,19.29172,10.83515
sgpcmbeC1.c1,2003,0318:30:00,31 ,1.574429,23.50374,12.59803,5.566637
sgpcmbeC1.c1,2003,0319:30:00,31 ,       0, 0.15789,0.005093,0.028358
sgpcmbeC1.c1,2003,0320:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0321:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0322:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2003,0323:30:00,26 ,       0,       0,       0,       0