PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/29-18:12:40
G01     88.8           32.2               17.5 +/-    0.88      29.3 +/-    0.88  0.040 / 0.060
G07     126.6          44.9               19.3 +/-    0.75      26.1 +/-    0.75  0.040 / 0.060
G11     67.9           39.7               17.4 +/-    0.60      25.4 +/-    0.60  0.030 / 0.030
G13     293.3          36.3               18.5 +/-    0.93      28.6 +/-    0.93  0.030 / 0.030
G17     215.9          52.1               20.5 +/-    0.57      25.2 +/-    0.57  0.040 / 0.050
G18     62.9           23.8               14.7 +/-    1.11      29.5 +/-    1.11  0.040 / 0.060
G19     215.3          26.5               19.2 +/-    4.23      36.3 +/-    4.23  0.060 / 0.060
G28     351.8          61.7               15.4 +/-    0.52      17.2 +/-    0.52  0.050 / 0.050
G30     108.6          74.8               17.9 +/-    0.43      18.5 +/-    0.43  0.050 / 0.110