datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 1:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 2:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 3:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 4:30:00,27 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 5:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,03 6:30:00,27 ,       0,17.92682,3.015388,3.904996
sgpcmbeC1.c1,2007,03 7:30:00,27 ,3.466667,130.3289,49.84061,34.13275
sgpcmbeC1.c1,2007,03 8:30:00,24 ,5.249697,237.7586,102.4204,63.12733
sgpcmbeC1.c1,2007,03 9:30:00,26 ,10.59567,326.1612,153.3426,91.16218
sgpcmbeC1.c1,2007,0310:30:00,26 ,12.79793, 400.087,188.8933,120.0731
sgpcmbeC1.c1,2007,0311:30:00,27 ,12.49673,425.8105,188.0209,115.6193
sgpcmbeC1.c1,2007,0312:30:00,27 ,31.09337,472.3085,208.2576,127.2715
sgpcmbeC1.c1,2007,0313:30:00,27 ,33.89342,466.9621, 188.471,124.5676
sgpcmbeC1.c1,2007,0314:30:00,27 ,12.61626,409.2891,189.1421,119.9148
sgpcmbeC1.c1,2007,0315:30:00,28 ,6.738709,489.8667,172.4296,108.4597
sgpcmbeC1.c1,2007,0316:30:00,27 ,13.48585, 257.426,115.4671,59.90617
sgpcmbeC1.c1,2007,0317:30:00,29 , 5.81719,136.1075,70.08744, 30.4057
sgpcmbeC1.c1,2007,0318:30:00,29 ,       0,22.99794,10.77559,5.929237
sgpcmbeC1.c1,2007,0319:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0320:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0321:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0322:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,0323:30:00,26 ,       0,       0,       0,       0