datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1997,11 0:30:00,28 ,       0,0.025099,0.000896,0.004743
sgpcmbeC1.c1,1997,11 1:30:00,28 ,       0,0.344671, 0.01231,0.065137
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 ,       0,0.176483,0.013501,0.043135
sgpcmbeC1.c1,1997,11 7:30:00,30 , 0.01183,38.79584,11.17538,13.05316
sgpcmbeC1.c1,1997,11 8:30:00,30 ,0.010326,57.98988, 22.3013,21.86922
sgpcmbeC1.c1,1997,11 9:30:00,30 ,0.025512,106.3017, 28.1502,26.50646
sgpcmbeC1.c1,1997,1110:30:00,30 ,0.089417,126.7956,25.67501,28.99974
sgpcmbeC1.c1,1997,1111:30:00,30 , 0.16923,212.0055,44.06007,57.34621
sgpcmbeC1.c1,1997,1112:30:00,30 ,0.141685,208.9592,47.00073,68.63848
sgpcmbeC1.c1,1997,1113:30:00,30 ,0.067337,202.6494,64.21649, 65.3923
sgpcmbeC1.c1,1997,1114:30:00,30 ,0.156728,175.7134,50.44067,45.56848
sgpcmbeC1.c1,1997,1115:30:00,30 , 0.04146,96.82681,37.35432,28.12146
sgpcmbeC1.c1,1997,1116:30:00,30 ,0.030081, 68.7027, 22.5579,23.26033
sgpcmbeC1.c1,1997,1117:30:00,30 ,       0,12.00762,2.562635, 3.11032
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 ,       0,0.551127,0.018371,0.100622
sgpcmbeC1.c1,1997,1121:30:00,30 ,       0,0.658328,0.021944,0.120194
sgpcmbeC1.c1,1997,1122:30:00,28 ,       0,0.882247,0.031509,0.166729
sgpcmbeC1.c1,1997,1123:30:00,29 ,       0,       0,       0,       0