datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1999,04 0:30:00,19 ,       0,0.137393,0.012462,0.037861
sgpcmbeC1.c1,1999,04 1:30:00,19 ,       0,0.000803,0.000042,0.000184
sgpcmbeC1.c1,1999,04 2:30:00,19 ,       0,0.359748,0.018934,0.082532
sgpcmbeC1.c1,1999,04 3:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,04 5:30:00,19 ,       0,0.598534,0.086649,0.161332
sgpcmbeC1.c1,1999,04 6:30:00,19 ,  0.3815,13.61352,7.979606,4.611772
sgpcmbeC1.c1,1999,04 7:30:00,19 ,1.876939, 21.0034,10.75635,5.674057
sgpcmbeC1.c1,1999,04 8:30:00,18 ,1.122868, 25.5309,12.19877,5.936268
sgpcmbeC1.c1,1999,04 9:30:00,18 ,1.263388,26.36611,13.12556,  7.3673
sgpcmbeC1.c1,1999,0410:30:00,18 ,4.506309,45.44288, 15.4089,15.09094
sgpcmbeC1.c1,1999,0411:30:00,18 ,1.695042,69.33556,16.95094,20.67756
sgpcmbeC1.c1,1999,0412:30:00,18 ,0.434931,76.69533,19.05888,22.78919
sgpcmbeC1.c1,1999,0413:30:00,18 ,2.402046, 73.8625,16.54849,20.45868
sgpcmbeC1.c1,1999,0414:30:00,18 ,0.997945,67.06101,20.04158,17.85949
sgpcmbeC1.c1,1999,0415:30:00,18 ,0.751401,56.43223,22.40835, 18.4336
sgpcmbeC1.c1,1999,0416:30:00,18 ,0.568177,33.19894,17.82389,9.871944
sgpcmbeC1.c1,1999,0417:30:00,18 ,0.347922,21.82935,12.63821,5.927731
sgpcmbeC1.c1,1999,0418:30:00,18 ,       0, 15.7575,8.635726,  4.7897
sgpcmbeC1.c1,1999,0419:30:00,18 ,       0,0.184172,0.019027,0.054138
sgpcmbeC1.c1,1999,0420:30:00,18 ,       0,0.115788,0.007905,0.027637
sgpcmbeC1.c1,1999,0421:30:00,18 ,       0,       0,       0,       0
sgpcmbeC1.c1,1999,0422:30:00,18 ,       0,0.400352,0.027387,0.095596
sgpcmbeC1.c1,1999,0423:30:00,18 ,       0,0.328321,0.032694,0.095869