datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2007,11 0:30:00,25 ,       0,3.115016,0.127691,0.622551
sgpcmbeC1.c1,2007,11 1:30:00,28 ,       0,3.486458,0.135242,0.659221
sgpcmbeC1.c1,2007,11 2:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 3:30:00,24 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 4:30:00,25 ,       0,1.901309,0.076052,0.380262
sgpcmbeC1.c1,2007,11 5:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,2007,11 6:30:00,30 ,       0,0.621027,0.083114,0.169523
sgpcmbeC1.c1,2007,11 7:30:00,30 ,0.056418,78.76852,37.15364, 20.2365
sgpcmbeC1.c1,2007,11 8:30:00,30 ,12.28237,261.1109,175.7407,61.89778
sgpcmbeC1.c1,2007,11 9:30:00,30 ,34.56048,437.2268,318.8398,100.0289
sgpcmbeC1.c1,2007,1110:30:00,30 ,67.48568,568.1307,433.5141,131.5201
sgpcmbeC1.c1,2007,1111:30:00,30 ,165.9564, 645.524, 506.226,127.3513
sgpcmbeC1.c1,2007,1112:30:00,30 ,159.9647,661.3917,532.8605,124.7409
sgpcmbeC1.c1,2007,1113:30:00,30 ,144.1475,615.2701,474.4079,130.8223
sgpcmbeC1.c1,2007,1114:30:00,30 ,90.41164,507.6167,383.4531,112.2156
sgpcmbeC1.c1,2007,1115:30:00,30 ,27.33046,341.4336,246.6776,78.49431
sgpcmbeC1.c1,2007,1116:30:00,30 ,9.283513,158.6696,97.06493,38.04837
sgpcmbeC1.c1,2007,1117:30:00,30 ,       0,18.58529,6.205685,4.570108
sgpcmbeC1.c1,2007,1118:30:00,30 ,       0,3.254652,0.183612,  0.6251
sgpcmbeC1.c1,2007,1119:30:00,30 ,       0,2.946091,0.123862,0.541466
sgpcmbeC1.c1,2007,1120:30:00,28 ,       0,0.237236,0.014141, 0.05301
sgpcmbeC1.c1,2007,1121:30:00,28 ,       0,2.561928,0.120436,0.490915
sgpcmbeC1.c1,2007,1122:30:00,25 ,       0,3.311061,0.132442,0.662212
sgpcmbeC1.c1,2007,1123:30:00,27 ,       0,0.241304,0.011613, 0.04796