PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-08:27:50
G01     69.6           32.0                4.5 +/-    0.79       7.6 +/-    0.79  0.040 / 0.040
G07     136.7          30.5                6.1 +/-    1.09      10.6 +/-    1.09  0.030 / 0.040
G11     54.8           33.6                3.5 +/-    0.95       5.7 +/-    0.95  0.060 / 0.090
G13     273.8          38.8                8.6 +/-    0.73      12.7 +/-    0.73  0.050 / 0.120
G15     302.4          15.4                0.7 +/-    2.01       1.7 +/-    2.01  0.030 / 0.040
G17     230.0          67.4                8.5 +/-    0.80       9.1 +/-    0.80  0.040 / 0.040
G19     222.7          43.7                6.3 +/-    0.82       8.7 +/-    0.82  0.060 / 0.100
G28     2.6            61.3                3.2 +/-    0.85       3.6 +/-    0.85  0.070 / 0.090
G30     135.3          65.2                7.8 +/-    0.74       8.5 +/-    0.74  0.040 / 0.060