Dip test

A first crude approach

The flag fs=2 is detected on the observation A(t2), the previous value A(t1) is also flagged fs=2, and the next previous value A(t0) is flagged fs=1.

If | A(t2) - A(t0) | < | A(t1) - A(t0) | then

set fs=9 on A(t1)
set fs=4 on A(t2)

A(t1) receives a corrected value by interpolation. The interpolation method can be linear or by Akima algorithm.

Relevant parameters those subject to the step check (QC1-3a):

1 | AA

2 | BI

104 | RA

105 | RR_01

113 | SS_1

123 | RT_1

172 | PH

174 | POM

175 | PON

176 | POX

177 | PP

197 | QE

198 | QL

199 | QLX

200 | QO

201 | QOX

211 | TA

212 | TAM

213 | TAN

215 | TAX

221 | TG

222 | TGM

223 | TGN

225 | TGX

227 | TJM

262 | UU

264 | UN

265 | UX

81 | FF

85 | FM

86 | FX

87 | FX_1

88 | FX_6

89 | FX_12

90 | FG_1

91 | FG_6

92 | FG_12

93 | FX_X

94 | FG_X