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17 pressure levels (in pgb.f00 subgroup)<br>
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0.9950 0.9821 0.9644 0.9425 0.9159 0.8838 0.8458 0.8014 0.7508 0.6943 0.6329
0.5681 0.5017 0.4357 0.3720 0.3125 0.2582 0.2101 0.1682 0.1326 0.1028 0.0782
0.0580 0.0418 0.0288 0.0183 0.0101 0.0027
28 sigma surfaces (in grbsanl subgroup)<br>
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270K 280K 290K 300K 315K 330K 350K 400K 450K 550K 650K
11 theta levels (in theta subgroup)<br>
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and boundary surfaces
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