datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2000,09 0:30:00,18 ,       0,26.94933,2.633224,6.212431
sgpcmbeC1.c1,2000,09 1:30:00,18 ,       0,41.81292,3.604118,9.690775
sgpcmbeC1.c1,2000,09 2:30:00,18 ,       0, 41.6523,5.340477,11.89443
sgpcmbeC1.c1,2000,09 3:30:00,17 ,       0,75.77802,9.828625,22.06454
sgpcmbeC1.c1,2000,09 4:30:00,17 ,       0,58.60629,7.616309,16.66278
sgpcmbeC1.c1,2000,09 5:30:00,17 ,       0,64.21146, 8.68117,18.43379
sgpcmbeC1.c1,2000,09 6:30:00,17 ,       0,67.41063,10.70636,20.31095
sgpcmbeC1.c1,2000,09 7:30:00,18 ,       0,28.44997,3.194373,6.880308
sgpcmbeC1.c1,2000,09 8:30:00,20 ,       0,26.05883,3.340627,6.397017
sgpcmbeC1.c1,2000,09 9:30:00,21 ,       0,17.23573,2.232939,4.137413
sgpcmbeC1.c1,2000,0910:30:00,21 ,       0,18.08044,2.276018,4.334272
sgpcmbeC1.c1,2000,0911:30:00,20 ,       0,11.92189,2.419441,3.891145
sgpcmbeC1.c1,2000,0912:30:00,19 ,       0,13.38096,2.453591,4.072673
sgpcmbeC1.c1,2000,0913:30:00,20 ,       0,23.17339,3.516095,6.522752
sgpcmbeC1.c1,2000,0914:30:00,21 ,       0,11.16102,2.141018, 3.37998
sgpcmbeC1.c1,2000,0915:30:00,20 ,       0,14.16617,2.414666,3.884517
sgpcmbeC1.c1,2000,0916:30:00,19 ,       0, 7.66492,1.450354,   2.296
sgpcmbeC1.c1,2000,0917:30:00,19 ,       0,6.732004,0.984298,1.618157
sgpcmbeC1.c1,2000,0918:30:00,20 ,       0,3.671776,0.855085,1.080686
sgpcmbeC1.c1,2000,0919:30:00,20 ,       0,3.336356,0.700359,1.000473
sgpcmbeC1.c1,2000,0920:30:00,19 ,       0,2.234273,0.606942,0.815317
sgpcmbeC1.c1,2000,0921:30:00,18 ,       0,25.01869, 2.67178,6.281091
sgpcmbeC1.c1,2000,0922:30:00,18 ,       0,77.51019,7.854677,  20.531
sgpcmbeC1.c1,2000,0923:30:00,18 ,       0,8.624971,1.467351,2.342306