"Pandemics and solar storms" "Pandemics/tListed" "by" "Garrett" "Pandemics" "Listed" "by" "Potter" "Years" "Magnitude" "Phase*" "Years" "Magnitude" "Phase*" "1729-30" "High" 0.2 "1729-33" "High" 0.2 "1732-33" "High" 0.5 "-" "-" "-" "1742-43" "Moderate" 0.36 "-" "-" "-" "1761-62" "High" 0 "1761-62" "Low" 0 1767 "Moderate" -0.22 "-" "-" "-" "1775-76" "Moderate" -0.33 "-" "-" "-" "1781-82" "High" 0.33 "1781-82" "High" 0.33 "1788-89" "Low" 0.07 "1788-90" "Low" 0.07 "1800-02" "Moderate" -0.33 "1799-1802" "Moderate?" 0.42 "1830-33" "High" 0 "1830-33" "High" 0.1 "1837-37" "High" -0.1 "-" "-" "-" "1847-48" "High" -0.08 "1847-48" "Moderate" -0.07 "1850-51" "Moderate" 0.15 "-" "-" "-" "1857-58" "Mild" -0.27 "1857-58" "Low" -0.27 "1873-75" "Mild" 0.27 "-" "-" "-" "1889-90" "High" -0.33 "1889-90" "High" -0.33 "-" "-" "-" 1900 "Low?" -0.5 "1918-19" "High" 0.1 "1918-20" "High" 0.1 1946 "?" 0.2 "1946-48" "Low" 0.2 1957 "High" 0 "1957-58" "High" 0 "1968-70" "High" 0 "1968-70" "High" 0 1977 "?" -0.2 "1977-78" "High" -0.2 "enddoc"