PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/08-20:58:00
G01     49.0           24.7               13.1 +/-    0.51      25.8 +/-    0.51  0.120 / 0.260
G06     177.0          27.1               19.1 +/-    1.18      35.6 +/-    1.18  0.130 / 0.290
G07     146.8          11.6               20.7 +/-    4.40      55.9 +/-    4.40  0.050 / 0.090
G11     44.6           14.8               12.0 +/-    2.14      29.9 +/-    2.14  0.060 / 0.080
G13     249.2          29.5               14.6 +/-    1.44      25.8 +/-    1.44  0.050 / 0.120
G15     282.6          15.4               11.0 +/-    1.42      27.1 +/-    1.42  0.050 / 0.140
G17     303.5          77.4               15.4 +/-    0.73      15.7 +/-    0.73  0.130 / 0.430
G19     248.4          59.8               16.4 +/-    0.46      18.6 +/-    0.46  0.120 / 0.330
G28     55.1           52.1               14.2 +/-    0.36      17.5 +/-    0.36  0.040 / 0.060
G30     150.1          38.8               17.7 +/-    0.95      26.2 +/-    0.95  0.040 / 0.070