Per #2780, grib1_ncep_129_7.txt fix units by replacing 'µg' wit…

…h 'mcg' to represent micrograms. Also replace 'mm6' with 'mm^6' by double-checking against the GRIB1 docs.

data/table_files/grib1_ncep_129_7.txt

@@ -155,18 +155,18 @@ GRIB1
 153 129 7 -1 "PPAN" "Probability of Precipitation being above normal" "%"
 154 129 7 -1 "PPNN" "Probability of Precipitation being near normal" "%"
 155 129 7 -1 "PPBN" "Probability of Precipitation being below normal" "%"
-156 129 7 -1 "PMTC" "Particulate matter (coarse)" "µg/m^3"
-157 129 7 -1 "PMTF" "Particulate matter (fine)" "µg/m^3"
+156 129 7 -1 "PMTC" "Particulate matter (coarse)" "mcg/m^3"
+157 129 7 -1 "PMTF" "Particulate matter (fine)" "mcg/m^3"
 158 129 7 -1 "AETMP" "Analysis error of temperature" "K"
 159 129 7 -1 "AEDPT" "Analysis error of dew point" "%"
 160 129 7 -1 "AESPH" "Analysis error of specific humidity" "kg/kg"
 161 129 7 -1 "AEUWD" "Analysis error of u-wind" "m/s"
 162 129 7 -1 "AEVWD" "Analysis error of v-wind" "m/s"
-163 129 7 -1 "LPMTF" "Particulate matter (fine)" "log10(µg/m^3)"
-164 129 7 -1 "LIPMF" "Integrated column particulate matter (fine)" "log10(µg/m^3)"
-165 129 7 -1 "REFZR" "Derived radar reflectivity backscatter from rain" "mm6/m^3"
-166 129 7 -1 "REFZI" "Derived radar reflectivity backscatter from ice" "mm6/m^3"
-167 129 7 -1 "REFZC" "Derived radar reflectivity backscatter from parameterized convection" "mm6/m^3"
+163 129 7 -1 "LPMTF" "Particulate matter (fine)" "log10(mcg/m^3)"
+164 129 7 -1 "LIPMF" "Integrated column particulate matter (fine)" "log10(mcg/m^3)"
+165 129 7 -1 "REFZR" "Derived radar reflectivity backscatter from rain" "mm^6/m^3"
+166 129 7 -1 "REFZI" "Derived radar reflectivity backscatter from ice" "mm^6/m^3"
+167 129 7 -1 "REFZC" "Derived radar reflectivity backscatter from parameterized convection" "mm^6/m^3"
 168 129 7 -1 "TCLSW" "Total column-integrated supercooled liquid water" "kg/m^2"
 169 129 7 -1 "TCOLM" "Total column-integrated melting ice" "kg/m^2"
 170 129 7 -1 "ELRDI" "Ellrod Index" "non-dim"