datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,03 0:30:00,10 ,       0,0.318045,0.047021,0.106561
sgpcmbeC1.c1,1997,03 1:30:00,10 ,       0,0.081076,0.008238,0.025596
sgpcmbeC1.c1,1997,03 2:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 3:30:00,10 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 4:30:00,10 ,       0,0.127772,0.012777,0.040405
sgpcmbeC1.c1,1997,03 5:30:00,11 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,03 6:30:00,11 ,0.426345,10.57698,4.937974,3.681456
sgpcmbeC1.c1,1997,03 7:30:00,11 ,1.251999,18.86806, 12.1455,6.107572
sgpcmbeC1.c1,1997,03 8:30:00,11 ,3.367865,22.21792,13.62956, 5.59721
sgpcmbeC1.c1,1997,03 9:30:00,10 , 0.97315,17.12852, 11.1168,4.488185
sgpcmbeC1.c1,1997,0310:30:00,10 ,3.578077,39.69235,10.30952,10.73313
sgpcmbeC1.c1,1997,0311:30:00,10 ,0.898592,45.04096,9.268645,12.98338
sgpcmbeC1.c1,1997,0312:30:00,10 ,0.941943,36.47985,11.59442,12.87266
sgpcmbeC1.c1,1997,0313:30:00,10 ,2.487766,44.14216, 10.0466,13.05186
sgpcmbeC1.c1,1997,0314:30:00,10 ,0.460978,60.36775,14.59968,18.05529
sgpcmbeC1.c1,1997,0315:30:00,11 ,1.799377, 32.2613,10.39127,7.820328
sgpcmbeC1.c1,1997,0316:30:00,11 ,1.486277,32.63221,12.61889,8.100293
sgpcmbeC1.c1,1997,0317:30:00,10 ,1.490453,28.27896,13.01028,8.050651
sgpcmbeC1.c1,1997,0318:30:00,9 ,0.991573,12.51081,7.709411,4.359666
sgpcmbeC1.c1,1997,0319:30:00,11 ,       0,0.226905,0.020628,0.068415
sgpcmbeC1.c1,1997,0320:30:00,11 ,       0,0.227736,0.020703,0.068665
sgpcmbeC1.c1,1997,0321:30:00,11 ,       0,0.170193,0.015472,0.051315
sgpcmbeC1.c1,1997,0322:30:00,11 ,       0,0.128603,0.011691,0.038775
sgpcmbeC1.c1,1997,0323:30:00,8 ,       0,0.416852,0.052107, 0.14738