datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.089266,0.003188, 0.01687
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0, 0.08582,0.003065,0.016218
sgpcmbeC1.c1,1997,11 2:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 3:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 4:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 5:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,11 6:30:00,30 ,       0,0.731492,0.098061,0.216986
sgpcmbeC1.c1,1997,11 7:30:00,30 ,1.252758,37.40473,18.13941,9.853337
sgpcmbeC1.c1,1997,11 8:30:00,30 ,16.39724,141.5836, 63.4093,30.14772
sgpcmbeC1.c1,1997,11 9:30:00,30 ,27.18233,190.3722,103.6551,47.15834
sgpcmbeC1.c1,1997,1110:30:00,30 ,54.02391,314.3593,135.9891,75.00796
sgpcmbeC1.c1,1997,1111:30:00,30 ,55.96766,341.5348,146.3452,73.34658
sgpcmbeC1.c1,1997,1112:30:00,30 ,57.29237,327.2692,156.9662,78.47245
sgpcmbeC1.c1,1997,1113:30:00,30 ,49.12474,293.0359, 140.451,72.67291
sgpcmbeC1.c1,1997,1114:30:00,30 ,34.73775,202.8361,116.8736,50.44614
sgpcmbeC1.c1,1997,1115:30:00,30 ,17.84633,158.4354,82.19968, 39.6495
sgpcmbeC1.c1,1997,1116:30:00,30 ,6.102124,75.06438,41.33822, 16.6685
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,12.47112,4.458876,3.375392
sgpcmbeC1.c1,1997,1118:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1119:30:00,30 ,       0,       0,       0,       0
sgpcmbeC1.c1,1997,1120:30:00,30 ,       0, 0.03658,0.001219,0.006679
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0, 0.09982,0.003327,0.018225
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,0.060366,0.002156,0.011408
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0