datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,09 0:30:00,27 ,       0,0.339011,0.019488,0.068693
sgpcmbeC1.c1,1998,09 1:30:00,27 ,       0,0.115599,0.008141,0.027062
sgpcmbeC1.c1,1998,09 2:30:00,27 ,       0, 0.09021,0.004922,0.018918
sgpcmbeC1.c1,1998,09 3:30:00,27 ,       0, 0.09629,0.005791,0.019569
sgpcmbeC1.c1,1998,09 4:30:00,27 ,       0, 0.01941, 0.00138,0.004977
sgpcmbeC1.c1,1998,09 5:30:00,27 ,       0,0.039655,0.001469,0.007632
sgpcmbeC1.c1,1998,09 6:30:00,28 ,0.461296,11.35349,6.032116,3.247401
sgpcmbeC1.c1,1998,09 7:30:00,28 ,2.563092,23.49503,12.54305,4.731963
sgpcmbeC1.c1,1998,09 8:30:00,28 ,1.204736,32.27319,11.44791,6.485122
sgpcmbeC1.c1,1998,09 9:30:00,28 ,1.411452,43.42979,10.95996,8.505656
sgpcmbeC1.c1,1998,0910:30:00,28 ,2.995885,42.93531,12.89359, 11.7118
sgpcmbeC1.c1,1998,0911:30:00,28 ,1.723291,51.68761,16.39603,16.00727
sgpcmbeC1.c1,1998,0912:30:00,28 ,0.565558,61.29331,19.27658, 18.8579
sgpcmbeC1.c1,1998,0913:30:00,28 ,2.534091, 62.5844,22.65293,21.15654
sgpcmbeC1.c1,1998,0914:30:00,28 ,4.105229,67.00532,23.90665,18.85595
sgpcmbeC1.c1,1998,0915:30:00,28 , 2.41613,44.32759,18.11225,14.24206
sgpcmbeC1.c1,1998,0916:30:00,28 ,2.571023,37.10373,15.36266,8.861669
sgpcmbeC1.c1,1998,0917:30:00,28 ,2.722834,26.46712,12.35863,6.262774
sgpcmbeC1.c1,1998,0918:30:00,28 ,       0,10.20538, 3.92403,3.236157
sgpcmbeC1.c1,1998,0919:30:00,28 ,       0,0.014885,0.000532,0.002813
sgpcmbeC1.c1,1998,0920:30:00,27 ,       0,0.396415,0.014682, 0.07629
sgpcmbeC1.c1,1998,0921:30:00,27 ,       0, 0.14633, 0.00542,0.028161
sgpcmbeC1.c1,1998,0922:30:00,27 ,       0, 0.16623,0.006214,0.031981
sgpcmbeC1.c1,1998,0923:30:00,27 ,       0,0.145045,0.009627,0.031315