PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-10:58:00
G01     87.1           32.4                3.6 +/-    1.04       6.0 +/-    1.04  0.020 / 0.040
G07     127.9          42.6                5.2 +/-    0.89       7.3 +/-    0.89  0.020 / 0.030
G11     64.5           37.9                2.8 +/-    0.58       4.2 +/-    0.58  0.060 / 0.160
G13     291.2          37.0                3.7 +/-    1.35       5.6 +/-    1.35  0.060 / 0.190
G17     216.2          57.8                4.6 +/-    0.66       5.3 +/-    0.66  0.040 / 0.040
G18     59.9           22.6                2.0 +/-    1.03       4.2 +/-    1.03  0.040 / 0.070
G19     216.1          25.0                5.5 +/-    2.56      10.8 +/-    2.56  0.050 / 0.050
G28     352.3          61.6                3.0 +/-    0.76       3.3 +/-    0.76  0.050 / 0.070
G30     110.1          75.8                5.0 +/-    0.90       5.2 +/-    0.90  0.090 / 0.110