def go(f="data/weather.csv",silent=True):
the=about.defaults()
t=Tab(file=f)
for n,here in enumerate(t.rows):
tmp=t.around(here,the)
me= tmp[0][1]
close = tmp[1][1]
far = t.far(here,the)
further= tmp[-1][1]
if not silent:
print("")
print(n,here.cells)
print(n,me.cells)
print(n,far.cells)
print(n,further.cells)
assert tmp[0][0] <= tmp[1][0] < tmp[-1][0]
