PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/13-10:12:50
G01     77.6           32.4                4.3 +/-    0.62       7.2 +/-    0.62  0.040 / 0.060
G07     132.6          35.5                5.2 +/-    0.53       8.2 +/-    0.53  0.040 / 0.060
G11     59.7           37.0                3.8 +/-    0.80       5.8 +/-    0.80  0.040 / 0.080
G13     282.2          38.9                4.6 +/-    0.82       6.8 +/-    0.82  0.050 / 0.080
G15     309.1          12.9                2.8 +/-    1.94       7.2 +/-    1.94  0.040 / 0.040
G17     221.5          60.0                5.0 +/-    1.68       5.7 +/-    1.68  0.030 / 0.060
G18     54.2           21.1                1.7 +/-    0.95       3.7 +/-    0.95  0.060 / 0.140
G19     218.3          37.5                5.2 +/-    1.85       7.9 +/-    1.85  0.050 / 0.110
G28     351.3          61.6                3.3 +/-    0.64       3.7 +/-    0.64  0.060 / 0.090
G30     126.1          70.2                4.8 +/-    0.62       5.1 +/-    0.62  0.060 / 0.090