datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,04 0:30:00,30 ,       0,0.413794,0.013793,0.075548
sgpcmbeC1.c1,1997,04 1:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 2:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 3:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,04 4:30:00,30 ,       0,0.389534,0.012984,0.071119
sgpcmbeC1.c1,1997,04 5:30:00,30 ,       0,6.628369,1.490704, 2.11042
sgpcmbeC1.c1,1997,04 6:30:00,30 ,1.205802,46.19081,14.52548,9.541265
sgpcmbeC1.c1,1997,04 7:30:00,30 ,3.190715,74.96509,21.58134,18.01309
sgpcmbeC1.c1,1997,04 8:30:00,30 ,2.136399,117.6729,28.96093,27.03297
sgpcmbeC1.c1,1997,04 9:30:00,30 ,1.428042,93.01939,34.11531,31.09108
sgpcmbeC1.c1,1997,0410:30:00,30 ,1.384691, 99.7569,32.51858,  30.286
sgpcmbeC1.c1,1997,0411:30:00,30 ,0.970784,119.9692,40.12031,32.08964
sgpcmbeC1.c1,1997,0412:30:00,30 ,1.376333,119.3678,47.26081,38.37156
sgpcmbeC1.c1,1997,0413:30:00,30 ,1.293956,145.0721,48.30329,37.48181
sgpcmbeC1.c1,1997,0414:30:00,30 ,  1.5414, 149.416,44.16165,37.86327
sgpcmbeC1.c1,1997,0415:30:00,30 ,2.311565,99.86167, 39.2403,28.61664
sgpcmbeC1.c1,1997,0416:30:00,30 ,3.431825,52.51458,19.87908,14.64355
sgpcmbeC1.c1,1997,0417:30:00,30 ,5.684696,35.23102,15.40961,7.931587
sgpcmbeC1.c1,1997,0418:30:00,30 ,2.798183,32.88294,14.18334, 6.58548
sgpcmbeC1.c1,1997,0419:30:00,30 ,       0,5.284154,1.557788,1.641009
sgpcmbeC1.c1,1997,0420:30:00,30 ,       0,0.836468,0.042038,0.168871
sgpcmbeC1.c1,1997,0421:30:00,30 ,       0,0.391113,0.013037,0.071407
sgpcmbeC1.c1,1997,0422:30:00,30 ,       0,0.693669,0.023122,0.126646
sgpcmbeC1.c1,1997,0423:30:00,30 ,       0,0.588348,0.019612,0.107417