datastream, year, month, tod,n, min, max, mean, std
sgpcmbeC1.c1,1998,12 0:30:00,23 ,       0,0.107261,0.004664,0.022366
sgpcmbeC1.c1,1998,12 1:30:00,24 ,       0,0.053869,0.002245,0.010996
sgpcmbeC1.c1,1998,12 2:30:00,25 ,       0,0.110027,0.004401,0.022005
sgpcmbeC1.c1,1998,12 3:30:00,25 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,12 4:30:00,28 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,12 5:30:00,28 ,       0,0.115154,0.004113,0.021762
sgpcmbeC1.c1,1998,12 6:30:00,29 ,       0,0.477584,0.016468,0.088685
sgpcmbeC1.c1,1998,12 7:30:00,29 ,0.222427, 18.6105,6.532625,4.903529
sgpcmbeC1.c1,1998,12 8:30:00,29 ,7.330454,151.4537,84.01673,46.47746
sgpcmbeC1.c1,1998,12 9:30:00,29 ,33.60292,312.3127,201.1256,95.43969
sgpcmbeC1.c1,1998,1210:30:00,28 ,39.52147, 438.727,314.9016,137.6496
sgpcmbeC1.c1,1998,1211:30:00,29 ,51.68022,515.9371,362.3272,164.8903
sgpcmbeC1.c1,1998,1212:30:00,28 ,37.15113,548.2377,412.6696,170.1858
sgpcmbeC1.c1,1998,1213:30:00,27 ,31.81816,514.1853, 375.348,167.6762
sgpcmbeC1.c1,1998,1214:30:00,27 ,26.17687,422.6232,297.4782,138.3752
sgpcmbeC1.c1,1998,1215:30:00,27 ,11.92746,286.1304,196.0264,86.07232
sgpcmbeC1.c1,1998,1216:30:00,28 ,6.428616,176.0617,77.40627,36.76488
sgpcmbeC1.c1,1998,1217:30:00,27 ,0.106958,6.956903,3.181627,1.877933
sgpcmbeC1.c1,1998,1218:30:00,27 ,       0,0.054312,0.002012,0.010452
sgpcmbeC1.c1,1998,1219:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1220:30:00,25 ,       0,0.173496, 0.00694,0.034699
sgpcmbeC1.c1,1998,1221:30:00,26 ,       0,0.329217,0.012662,0.064565
sgpcmbeC1.c1,1998,1222:30:00,26 ,       0,       0,       0,       0
sgpcmbeC1.c1,1998,1223:30:00,25 ,       0,0.713462,0.028538,0.142692