PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-17:58:10
G01     120.1          17.2               12.5 +/-    1.84      29.4 +/-    1.84  0.050 / 0.070
G07     76.7           67.4               11.0 +/-    0.40      11.9 +/-    0.40  0.070 / 0.050
G08     46.2           34.7               10.5 +/-    1.51      16.8 +/-    1.51  0.030 / 0.030
G09     177.3          27.3               11.0 +/-    1.23      20.4 +/-    1.23  0.030 / 0.030
G11     109.5          39.5               12.3 +/-    0.67      18.1 +/-    0.67  0.030 / 0.040
G13     318.3          18.4               11.4 +/-    2.41      26.1 +/-    2.41  0.030 / 0.040
G17     202.4          20.5               12.3 +/-    2.25      26.6 +/-    2.25  0.050 / 0.050
G18     95.9           20.4               10.6 +/-    1.38      23.1 +/-    1.38  0.050 / 0.050
G28     291.0          57.0               11.2 +/-    1.28      13.1 +/-    1.28  0.110 / 0.200
G30     346.6          68.3                9.9 +/-    0.36      10.6 +/-    0.36  0.110 / 0.250