datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,03 0:30:00,30 ,       0,1232.427,75.21117,233.2451
sgpcmbeC1.c1,2007,03 1:30:00,30 ,       0, 1101.14,73.99319,212.7002
sgpcmbeC1.c1,2007,03 2:30:00,30 ,       0,1206.166,83.85606,238.8547
sgpcmbeC1.c1,2007,03 3:30:00,30 ,       0,585.4809,49.50478,120.0636
sgpcmbeC1.c1,2007,03 4:30:00,30 ,       0,3416.862,149.8737,620.8624
sgpcmbeC1.c1,2007,03 5:30:00,30 ,0.000307,3583.665,240.8676,819.0522
sgpcmbeC1.c1,2007,03 6:30:00,30 ,0.009874,3819.886,256.5781,870.6047
sgpcmbeC1.c1,2007,03 7:30:00,30 ,       0,3701.107, 251.297,798.8167
sgpcmbeC1.c1,2007,03 8:30:00,30 ,       0,2778.966,165.4494,517.9141
sgpcmbeC1.c1,2007,03 9:30:00,30 ,       0, 1481.56,148.8002,331.8666
sgpcmbeC1.c1,2007,0310:30:00,31 ,       0,3227.088,289.0708,805.3267
sgpcmbeC1.c1,2007,0311:30:00,29 ,       0,2992.297,141.3515,553.6816
sgpcmbeC1.c1,2007,0312:30:00,31 ,       0,4713.962,341.5404,1013.175
sgpcmbeC1.c1,2007,0313:30:00,31 ,0.003479,4387.871,313.2783,915.6465
sgpcmbeC1.c1,2007,0314:30:00,31 ,       0, 4504.81,346.8698,1022.733
sgpcmbeC1.c1,2007,0315:30:00,31 ,       0,4004.977, 293.895,882.2812
sgpcmbeC1.c1,2007,0316:30:00,30 ,0.086054,1944.815,121.3227,366.1476
sgpcmbeC1.c1,2007,0317:30:00,30 ,0.120547,233.5121,35.45729,64.98381
sgpcmbeC1.c1,2007,0318:30:00,30 ,0.309652,332.3173,26.94613,  63.584
sgpcmbeC1.c1,2007,0319:30:00,31 ,0.207069, 1006.79,80.74816, 211.237
sgpcmbeC1.c1,2007,0320:30:00,30 ,0.112908,413.4592,37.23648,91.44975
sgpcmbeC1.c1,2007,0321:30:00,30 ,0.169512,2166.583,107.4726, 402.497
sgpcmbeC1.c1,2007,0322:30:00,29 ,0.038783,764.7161,56.68587,174.6721
sgpcmbeC1.c1,2007,0323:30:00,30 ,0.016857,1495.825,114.2768,315.8852