PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-18:58:00
G07     34.7           69.7               12.2 +/-    1.01      12.9 +/-    1.01  0.040 / 0.070
G08     57.7           46.7               11.4 +/-    0.44      15.0 +/-    0.44  0.040 / 0.080
G09     179.3          42.3               15.8 +/-    1.28      22.1 +/-    1.28  0.070 / 0.130
G11     125.5          31.7               14.5 +/-    1.19      24.5 +/-    1.19  0.090 / 0.150
G18     109.1          13.9               14.7 +/-    2.68      37.7 +/-    2.68  0.060 / 0.080
G27     38.0           11.0               10.2 +/-    1.57      27.8 +/-    1.57  0.050 / 0.080
G28     268.8          50.2               12.0 +/-    0.89      15.2 +/-    0.89  0.030 / 0.050
G30     329.1          57.5               11.0 +/-    0.76      12.8 +/-    0.76  0.030 / 0.040