datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,2002,01 0:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 1:30:00,18 ,       0, 0.01643,0.000913,0.003873
sgpcmbeC1.c1,2002,01 2:30:00,12 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 3:30:00,16 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 4:30:00,19 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 5:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 6:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,01 7:30:00,29 ,       0,3.016721, 0.88385,0.792924
sgpcmbeC1.c1,2002,01 8:30:00,29 ,1.692621,35.28196,20.17102,9.866605
sgpcmbeC1.c1,2002,01 9:30:00,29 ,4.960113,74.96823,47.52593,21.73024
sgpcmbeC1.c1,2002,0110:30:00,29 ,6.974153,104.0288,68.03318,29.49807
sgpcmbeC1.c1,2002,0111:30:00,28 ,6.830793,122.6587,87.28469,29.81804
sgpcmbeC1.c1,2002,0112:30:00,29 , 6.88647,130.2147, 91.1193,34.95156
sgpcmbeC1.c1,2002,0113:30:00,29 , 6.23669,127.1783,91.51903,33.69368
sgpcmbeC1.c1,2002,0114:30:00,29 ,6.159864,112.6755,79.26152,  30.022
sgpcmbeC1.c1,2002,0115:30:00,29 ,3.287261,88.04884,58.66653,23.53965
sgpcmbeC1.c1,2002,0116:30:00,29 ,1.589706,52.65092,29.64191, 14.3861
sgpcmbeC1.c1,2002,0117:30:00,29 ,0.071109,15.59627,5.384671,4.830317
sgpcmbeC1.c1,2002,0118:30:00,29 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0119:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0120:30:00,20 ,       0,       0,       0,       0
sgpcmbeC1.c1,2002,0121:30:00,21 ,       0,0.041139,0.001959,0.008977
sgpcmbeC1.c1,2002,0122:30:00,17 ,       0,0.016858,0.000992,0.004089
sgpcmbeC1.c1,2002,0123:30:00,17 ,       0,       0,       0,       0