add missing timezone field in json, differentiate between 15 and 30 degree tilt portland pv site

Author: lboeman

solarforecastarbiter/io/reference_observations/sfa_reference_sites.csv

@@ -30,7 +30,8 @@ interval_length,name,latitude,longitude,elevation,network_api_id,network_api_abb
 1,UO Solar Awning Eugene OR,44.05,-123.07,150,94255.0,AW,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
 1,Kalapuya High School OR PV,45.0,-120.0,0,94259.0,KA,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
 1,Salem OR,44.92100000000001,-123.01799999999999,62,94806.0,SA,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
-1,Portland OR PV,45.51,-122.69,70,94808.0,PS,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
+1,Portland OR PV 15 deg tilt,45.51,-122.69,70,94808.0(15),PS,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
+1,Portland OR PV 30 deg tilt,45.51,-122.69,70,94808.0,PS,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
 1,Cheney WA,47.49,-117.589,777,94158.0,CY,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
 1,Eugene OR,44.05,-123.07,150,94255.0,EU,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML
 1,Burns OR,43.52,-119.02,1265,94170.0,BU,Etc/GMT+8,"Peterson, J., and Vignola, F., 2017: Structure of a Comprehensive Solar Radiation Dataset. Proceedings of the ASES National Solar Conference 2017. doi: 10.18086/solar.2017.07.02",UO SRML