Fig. 4From: High-precision VTEC derivation with GEONETVTEC maps from 10:00 UT (19:00 JST) to 17:00 UT (03:00 JST) of 11 July 2014. Unit of the legend is TECU. Note that the VTEC legends have been reduced by 6 TECU after 14:00 UT as the background VTEC decreasedBack to article page