PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/18-20:43:00
G01     98.3           29.5               15.7 +/-    0.36      27.7 +/-    0.36  0.060 / 0.120
G07     118.0          52.1               16.0 +/-    0.47      19.7 +/-    0.47  0.060 / 0.140
G08     42.1           16.9               10.0 +/-    0.82      23.7 +/-    0.82  0.090 / 0.130
G11     79.5           42.8               16.0 +/-    0.57      22.3 +/-    0.57  0.070 / 0.150
G13     302.5          32.9               15.0 +/-    1.82      24.7 +/-    1.82  0.040 / 0.110
G18     71.8           24.9               14.2 +/-    0.64      27.7 +/-    0.64  0.040 / 0.080
G19     211.9          19.8               24.1 +/-    2.70      53.3 +/-    2.70  0.040 / 0.060
G28     335.7          61.9               14.4 +/-    0.66      16.1 +/-    0.66  0.030 / 0.050
G30     78.8           78.3               14.5 +/-    0.79      14.8 +/-    0.79  0.020 / 0.080