Spline-Based Formulas for the Determination of Equation of Time and Declination Angle

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td align="left">   Comparison parameters</td><td align="center" rowspan="2">Equation (<a href="https://static.hindawi.com/articles/isrn/volume-2011/217484/figures/#EEq6">6</a>)</td><td align="center" rowspan="2">Equation (<a href="https://static.hindawi.com/articles/isrn/volume-2011/217484/figures/#EEq7">7</a>)</td><td align="center" colspan="2">Spline</td></tr><tr><td align="left"></td><td align="center">20<br/>knot</td><td align="center">20 <br/>knot</td></tr><tr><td align="center" colspan="5"><hr/></td></tr><tr><td align="left">SSE</td><td align="center">213.0695</td><td align="center">16.6252</td><td align="center">0.2301</td><td align="center">213.0695</td></tr><tr><td align="left">MAE</td><td align="center">1.6964</td><td align="center">0.3390</td><td align="center">0.1328</td><td align="center">1.6964</td></tr><tr><td align="left">AAE</td><td align="center">0.5360</td><td align="center">0.1773</td><td align="center">6.3055 × 10<sup>−4</sup></td><td align="center">0.5360</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

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Table 4

Table 4: Spline-Based Formulas for the Determination of Equation of Time and Declination Angle 