#h date epoch count moving_mean
19980201	886320000	6	-
19980202	886406400	8	-
19980203	886492800	19	-
19980204	886579200	53	21.5
19980205	886665600	20	25
19980206	886752000	18	27.5
19980207	886838400	5	24
19980208	886924800	9	13
19980209	887011200	22	13.5
19980210	887097600	22	14.5
19980211	887184000	36	22.25
19980212	887270400	26	26.5
19980213	887356800	23	26.75
19980214	887443200	6	22.75
#  | dbcolmovingstats -n 4 -e - count